Physical effort in outputting 5V 1–2A?

The name of the pictureThe name of the pictureThe name of the pictureClash Royale CLAN TAG#URR8PPP











up vote
2
down vote

favorite












I have an iPhone, and sometimes recharging it from a wall is inconvenient. Maybe I am on a long bus ride. If I am willing to do physical activity/exercise to produce power, how much effort would I need to exert to act as a phone charger, supplying a steady 1–2 amps at 5 V?



This hypothetical device would need to be small and light enough that I could carry it... no point in it if I have to be at home to use it.



For example, there’s a simple hand exercise device that you squeeze over and over to build hand muscle. How much power could that generate?










share|improve this question







New contributor




Philip is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.



















  • I won't say too much, but I will point to this link: newatlas.com/…. It is a stationary bike. A person riding this can generate 200W of power - for your situation (5V @ 2A), that is only 10W of power - 5% of what the bike could generate. So I would take a gamble and say it is possible. But no idea how (probably more suited to a mechatronic/mechanical engineer).
    – DSWG
    3 hours ago











  • Probably a more efficient hand device is a crank generator. These aren't squeeze devices, though, and I think they are all mounted in some fashion. But I've seen units ranging from 10 W to 65 W (though I don't know how long you or me might keep up with a 65 W generator.) Your total is 10 W, so crank devices exist in the right range for continuous, direct operation. Efficiencies can be as high, so I read, as 80%. But of course, human biomechanics has more/less efficient positions during a crank, and in any case humans are NOT efficient converters of energy, themselves. See Patent US7893551B2.
    – jonk
    3 hours ago











  • Google hand crank radio, see if you can get a power output figure? You don't have to generate the full 10W, as long as you have USB port circuitry sophisticated enough to report how much current it can generate.
    – TimWescott
    2 hours ago






  • 1




    If you get one of those squeeze devices and measure the force it takes to squeeze, you can then estimate the power -- energy = force * distance, power = energy/time. So figure out how much energy per squeeze, then figure out how fast you can squeeze the thing continually. You'll want to switch off your right and left hands, or you'll look like Popeye on one side and Olivoil on the other.
    – TimWescott
    2 hours ago










  • Your biggest challenge will be keeping cool, not working up a major sweat.
    – analogsystemsrf
    2 hours ago














up vote
2
down vote

favorite












I have an iPhone, and sometimes recharging it from a wall is inconvenient. Maybe I am on a long bus ride. If I am willing to do physical activity/exercise to produce power, how much effort would I need to exert to act as a phone charger, supplying a steady 1–2 amps at 5 V?



This hypothetical device would need to be small and light enough that I could carry it... no point in it if I have to be at home to use it.



For example, there’s a simple hand exercise device that you squeeze over and over to build hand muscle. How much power could that generate?










share|improve this question







New contributor




Philip is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.



















  • I won't say too much, but I will point to this link: newatlas.com/…. It is a stationary bike. A person riding this can generate 200W of power - for your situation (5V @ 2A), that is only 10W of power - 5% of what the bike could generate. So I would take a gamble and say it is possible. But no idea how (probably more suited to a mechatronic/mechanical engineer).
    – DSWG
    3 hours ago











  • Probably a more efficient hand device is a crank generator. These aren't squeeze devices, though, and I think they are all mounted in some fashion. But I've seen units ranging from 10 W to 65 W (though I don't know how long you or me might keep up with a 65 W generator.) Your total is 10 W, so crank devices exist in the right range for continuous, direct operation. Efficiencies can be as high, so I read, as 80%. But of course, human biomechanics has more/less efficient positions during a crank, and in any case humans are NOT efficient converters of energy, themselves. See Patent US7893551B2.
    – jonk
    3 hours ago











  • Google hand crank radio, see if you can get a power output figure? You don't have to generate the full 10W, as long as you have USB port circuitry sophisticated enough to report how much current it can generate.
    – TimWescott
    2 hours ago






  • 1




    If you get one of those squeeze devices and measure the force it takes to squeeze, you can then estimate the power -- energy = force * distance, power = energy/time. So figure out how much energy per squeeze, then figure out how fast you can squeeze the thing continually. You'll want to switch off your right and left hands, or you'll look like Popeye on one side and Olivoil on the other.
    – TimWescott
    2 hours ago










  • Your biggest challenge will be keeping cool, not working up a major sweat.
    – analogsystemsrf
    2 hours ago












up vote
2
down vote

favorite









up vote
2
down vote

favorite











I have an iPhone, and sometimes recharging it from a wall is inconvenient. Maybe I am on a long bus ride. If I am willing to do physical activity/exercise to produce power, how much effort would I need to exert to act as a phone charger, supplying a steady 1–2 amps at 5 V?



This hypothetical device would need to be small and light enough that I could carry it... no point in it if I have to be at home to use it.



For example, there’s a simple hand exercise device that you squeeze over and over to build hand muscle. How much power could that generate?










share|improve this question







New contributor




Philip is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.











I have an iPhone, and sometimes recharging it from a wall is inconvenient. Maybe I am on a long bus ride. If I am willing to do physical activity/exercise to produce power, how much effort would I need to exert to act as a phone charger, supplying a steady 1–2 amps at 5 V?



This hypothetical device would need to be small and light enough that I could carry it... no point in it if I have to be at home to use it.



For example, there’s a simple hand exercise device that you squeeze over and over to build hand muscle. How much power could that generate?







power-supply






share|improve this question







New contributor




Philip is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.











share|improve this question







New contributor




Philip is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.









share|improve this question




share|improve this question






New contributor




Philip is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.









asked 3 hours ago









Philip

1112




1112




New contributor




Philip is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.





New contributor





Philip is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.






Philip is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.











  • I won't say too much, but I will point to this link: newatlas.com/…. It is a stationary bike. A person riding this can generate 200W of power - for your situation (5V @ 2A), that is only 10W of power - 5% of what the bike could generate. So I would take a gamble and say it is possible. But no idea how (probably more suited to a mechatronic/mechanical engineer).
    – DSWG
    3 hours ago











  • Probably a more efficient hand device is a crank generator. These aren't squeeze devices, though, and I think they are all mounted in some fashion. But I've seen units ranging from 10 W to 65 W (though I don't know how long you or me might keep up with a 65 W generator.) Your total is 10 W, so crank devices exist in the right range for continuous, direct operation. Efficiencies can be as high, so I read, as 80%. But of course, human biomechanics has more/less efficient positions during a crank, and in any case humans are NOT efficient converters of energy, themselves. See Patent US7893551B2.
    – jonk
    3 hours ago











  • Google hand crank radio, see if you can get a power output figure? You don't have to generate the full 10W, as long as you have USB port circuitry sophisticated enough to report how much current it can generate.
    – TimWescott
    2 hours ago






  • 1




    If you get one of those squeeze devices and measure the force it takes to squeeze, you can then estimate the power -- energy = force * distance, power = energy/time. So figure out how much energy per squeeze, then figure out how fast you can squeeze the thing continually. You'll want to switch off your right and left hands, or you'll look like Popeye on one side and Olivoil on the other.
    – TimWescott
    2 hours ago










  • Your biggest challenge will be keeping cool, not working up a major sweat.
    – analogsystemsrf
    2 hours ago
















  • I won't say too much, but I will point to this link: newatlas.com/…. It is a stationary bike. A person riding this can generate 200W of power - for your situation (5V @ 2A), that is only 10W of power - 5% of what the bike could generate. So I would take a gamble and say it is possible. But no idea how (probably more suited to a mechatronic/mechanical engineer).
    – DSWG
    3 hours ago











  • Probably a more efficient hand device is a crank generator. These aren't squeeze devices, though, and I think they are all mounted in some fashion. But I've seen units ranging from 10 W to 65 W (though I don't know how long you or me might keep up with a 65 W generator.) Your total is 10 W, so crank devices exist in the right range for continuous, direct operation. Efficiencies can be as high, so I read, as 80%. But of course, human biomechanics has more/less efficient positions during a crank, and in any case humans are NOT efficient converters of energy, themselves. See Patent US7893551B2.
    – jonk
    3 hours ago











  • Google hand crank radio, see if you can get a power output figure? You don't have to generate the full 10W, as long as you have USB port circuitry sophisticated enough to report how much current it can generate.
    – TimWescott
    2 hours ago






  • 1




    If you get one of those squeeze devices and measure the force it takes to squeeze, you can then estimate the power -- energy = force * distance, power = energy/time. So figure out how much energy per squeeze, then figure out how fast you can squeeze the thing continually. You'll want to switch off your right and left hands, or you'll look like Popeye on one side and Olivoil on the other.
    – TimWescott
    2 hours ago










  • Your biggest challenge will be keeping cool, not working up a major sweat.
    – analogsystemsrf
    2 hours ago















I won't say too much, but I will point to this link: newatlas.com/…. It is a stationary bike. A person riding this can generate 200W of power - for your situation (5V @ 2A), that is only 10W of power - 5% of what the bike could generate. So I would take a gamble and say it is possible. But no idea how (probably more suited to a mechatronic/mechanical engineer).
– DSWG
3 hours ago





I won't say too much, but I will point to this link: newatlas.com/…. It is a stationary bike. A person riding this can generate 200W of power - for your situation (5V @ 2A), that is only 10W of power - 5% of what the bike could generate. So I would take a gamble and say it is possible. But no idea how (probably more suited to a mechatronic/mechanical engineer).
– DSWG
3 hours ago













Probably a more efficient hand device is a crank generator. These aren't squeeze devices, though, and I think they are all mounted in some fashion. But I've seen units ranging from 10 W to 65 W (though I don't know how long you or me might keep up with a 65 W generator.) Your total is 10 W, so crank devices exist in the right range for continuous, direct operation. Efficiencies can be as high, so I read, as 80%. But of course, human biomechanics has more/less efficient positions during a crank, and in any case humans are NOT efficient converters of energy, themselves. See Patent US7893551B2.
– jonk
3 hours ago





Probably a more efficient hand device is a crank generator. These aren't squeeze devices, though, and I think they are all mounted in some fashion. But I've seen units ranging from 10 W to 65 W (though I don't know how long you or me might keep up with a 65 W generator.) Your total is 10 W, so crank devices exist in the right range for continuous, direct operation. Efficiencies can be as high, so I read, as 80%. But of course, human biomechanics has more/less efficient positions during a crank, and in any case humans are NOT efficient converters of energy, themselves. See Patent US7893551B2.
– jonk
3 hours ago













Google hand crank radio, see if you can get a power output figure? You don't have to generate the full 10W, as long as you have USB port circuitry sophisticated enough to report how much current it can generate.
– TimWescott
2 hours ago




Google hand crank radio, see if you can get a power output figure? You don't have to generate the full 10W, as long as you have USB port circuitry sophisticated enough to report how much current it can generate.
– TimWescott
2 hours ago




1




1




If you get one of those squeeze devices and measure the force it takes to squeeze, you can then estimate the power -- energy = force * distance, power = energy/time. So figure out how much energy per squeeze, then figure out how fast you can squeeze the thing continually. You'll want to switch off your right and left hands, or you'll look like Popeye on one side and Olivoil on the other.
– TimWescott
2 hours ago




If you get one of those squeeze devices and measure the force it takes to squeeze, you can then estimate the power -- energy = force * distance, power = energy/time. So figure out how much energy per squeeze, then figure out how fast you can squeeze the thing continually. You'll want to switch off your right and left hands, or you'll look like Popeye on one side and Olivoil on the other.
– TimWescott
2 hours ago












Your biggest challenge will be keeping cool, not working up a major sweat.
– analogsystemsrf
2 hours ago




Your biggest challenge will be keeping cool, not working up a major sweat.
– analogsystemsrf
2 hours ago










3 Answers
3






active

oldest

votes

















up vote
1
down vote













20 watts delivered into a hand-cranked generator (enough to deliver 10 electrical watts after conversion losses) could be managed all day by a fit and motivated person. This would employ all of your arm muscles. However, you'd need reasonable length cranks, comfortable handles, a good secure mounting for the generator, it's not something you'd nonchalantly carry onto and use on a bus.



A grip-squeeze device could be rigged to generate some power but, only being able to use the small grip muscles in the forearm, you'd struggle to get more than a few watts for a few minutes before exhaustion.



If you don't mind standing, then a mini-stepper could be rigged with a generator. This would use your legs, so again we're back in the sustained many 10s of watts region. It could lie stably on the floor, and maybe fit into a small backpack, so is probably the most suitable device overall.






share|improve this answer



























    up vote
    0
    down vote













    10 watts compared to the 550 foot-pounds and 746 watts of ONE Horsepower, gives us useful numbers.



    You need to lift 550 foot-pounds * 10/746 = 550 * 1/75 ~~ 8 pounds lifted up ONE FOOT, every second.



    Can you lift a gallon of water, every second, up one foot, for an hour?






    share|improve this answer



























      up vote
      0
      down vote













      Technically, a person with mass of 100 kg walking in 1-m steps at 2 m/s (about 4.5 miles per hour) has to generate/use about 500 W of power, as this article illustrates. So if you have some device embedded into your shoes, harvesting extra 10 W should be doable, especially since you need the charge for 1 hour only (smartphone batteries have about 10 W-hr capacity, and if we neglect conversion losses). So adding 2% load to the walking effort should do the job. How comfortable these shoes will be is another question.



      There were attempts to use the energy harvesting inside shoes, but the results were not very impressive, 3-4 mW.



      There are even instructables how to make "shoe generator" out of parts from rechargeable flashlight, so this method likely generates more than few milliwatts.






      share|improve this answer






















        Your Answer




        StackExchange.ifUsing("editor", function ()
        return StackExchange.using("mathjaxEditing", function ()
        StackExchange.MarkdownEditor.creationCallbacks.add(function (editor, postfix)
        StackExchange.mathjaxEditing.prepareWmdForMathJax(editor, postfix, [["\$", "\$"]]);
        );
        );
        , "mathjax-editing");

        StackExchange.ifUsing("editor", function ()
        return StackExchange.using("schematics", function ()
        StackExchange.schematics.init();
        );
        , "cicuitlab");

        StackExchange.ready(function()
        var channelOptions =
        tags: "".split(" "),
        id: "135"
        ;
        initTagRenderer("".split(" "), "".split(" "), channelOptions);

        StackExchange.using("externalEditor", function()
        // Have to fire editor after snippets, if snippets enabled
        if (StackExchange.settings.snippets.snippetsEnabled)
        StackExchange.using("snippets", function()
        createEditor();
        );

        else
        createEditor();

        );

        function createEditor()
        StackExchange.prepareEditor(
        heartbeatType: 'answer',
        convertImagesToLinks: false,
        noModals: false,
        showLowRepImageUploadWarning: true,
        reputationToPostImages: null,
        bindNavPrevention: true,
        postfix: "",
        onDemand: true,
        discardSelector: ".discard-answer"
        ,immediatelyShowMarkdownHelp:true
        );



        );






        Philip is a new contributor. Be nice, and check out our Code of Conduct.









         

        draft saved


        draft discarded


















        StackExchange.ready(
        function ()
        StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2felectronics.stackexchange.com%2fquestions%2f403835%2fphysical-effort-in-outputting-5v-1-2a%23new-answer', 'question_page');

        );

        Post as a guest






























        3 Answers
        3






        active

        oldest

        votes








        3 Answers
        3






        active

        oldest

        votes









        active

        oldest

        votes






        active

        oldest

        votes








        up vote
        1
        down vote













        20 watts delivered into a hand-cranked generator (enough to deliver 10 electrical watts after conversion losses) could be managed all day by a fit and motivated person. This would employ all of your arm muscles. However, you'd need reasonable length cranks, comfortable handles, a good secure mounting for the generator, it's not something you'd nonchalantly carry onto and use on a bus.



        A grip-squeeze device could be rigged to generate some power but, only being able to use the small grip muscles in the forearm, you'd struggle to get more than a few watts for a few minutes before exhaustion.



        If you don't mind standing, then a mini-stepper could be rigged with a generator. This would use your legs, so again we're back in the sustained many 10s of watts region. It could lie stably on the floor, and maybe fit into a small backpack, so is probably the most suitable device overall.






        share|improve this answer
























          up vote
          1
          down vote













          20 watts delivered into a hand-cranked generator (enough to deliver 10 electrical watts after conversion losses) could be managed all day by a fit and motivated person. This would employ all of your arm muscles. However, you'd need reasonable length cranks, comfortable handles, a good secure mounting for the generator, it's not something you'd nonchalantly carry onto and use on a bus.



          A grip-squeeze device could be rigged to generate some power but, only being able to use the small grip muscles in the forearm, you'd struggle to get more than a few watts for a few minutes before exhaustion.



          If you don't mind standing, then a mini-stepper could be rigged with a generator. This would use your legs, so again we're back in the sustained many 10s of watts region. It could lie stably on the floor, and maybe fit into a small backpack, so is probably the most suitable device overall.






          share|improve this answer






















            up vote
            1
            down vote










            up vote
            1
            down vote









            20 watts delivered into a hand-cranked generator (enough to deliver 10 electrical watts after conversion losses) could be managed all day by a fit and motivated person. This would employ all of your arm muscles. However, you'd need reasonable length cranks, comfortable handles, a good secure mounting for the generator, it's not something you'd nonchalantly carry onto and use on a bus.



            A grip-squeeze device could be rigged to generate some power but, only being able to use the small grip muscles in the forearm, you'd struggle to get more than a few watts for a few minutes before exhaustion.



            If you don't mind standing, then a mini-stepper could be rigged with a generator. This would use your legs, so again we're back in the sustained many 10s of watts region. It could lie stably on the floor, and maybe fit into a small backpack, so is probably the most suitable device overall.






            share|improve this answer












            20 watts delivered into a hand-cranked generator (enough to deliver 10 electrical watts after conversion losses) could be managed all day by a fit and motivated person. This would employ all of your arm muscles. However, you'd need reasonable length cranks, comfortable handles, a good secure mounting for the generator, it's not something you'd nonchalantly carry onto and use on a bus.



            A grip-squeeze device could be rigged to generate some power but, only being able to use the small grip muscles in the forearm, you'd struggle to get more than a few watts for a few minutes before exhaustion.



            If you don't mind standing, then a mini-stepper could be rigged with a generator. This would use your legs, so again we're back in the sustained many 10s of watts region. It could lie stably on the floor, and maybe fit into a small backpack, so is probably the most suitable device overall.







            share|improve this answer












            share|improve this answer



            share|improve this answer










            answered 47 mins ago









            Neil_UK

            71.6k273158




            71.6k273158






















                up vote
                0
                down vote













                10 watts compared to the 550 foot-pounds and 746 watts of ONE Horsepower, gives us useful numbers.



                You need to lift 550 foot-pounds * 10/746 = 550 * 1/75 ~~ 8 pounds lifted up ONE FOOT, every second.



                Can you lift a gallon of water, every second, up one foot, for an hour?






                share|improve this answer
























                  up vote
                  0
                  down vote













                  10 watts compared to the 550 foot-pounds and 746 watts of ONE Horsepower, gives us useful numbers.



                  You need to lift 550 foot-pounds * 10/746 = 550 * 1/75 ~~ 8 pounds lifted up ONE FOOT, every second.



                  Can you lift a gallon of water, every second, up one foot, for an hour?






                  share|improve this answer






















                    up vote
                    0
                    down vote










                    up vote
                    0
                    down vote









                    10 watts compared to the 550 foot-pounds and 746 watts of ONE Horsepower, gives us useful numbers.



                    You need to lift 550 foot-pounds * 10/746 = 550 * 1/75 ~~ 8 pounds lifted up ONE FOOT, every second.



                    Can you lift a gallon of water, every second, up one foot, for an hour?






                    share|improve this answer












                    10 watts compared to the 550 foot-pounds and 746 watts of ONE Horsepower, gives us useful numbers.



                    You need to lift 550 foot-pounds * 10/746 = 550 * 1/75 ~~ 8 pounds lifted up ONE FOOT, every second.



                    Can you lift a gallon of water, every second, up one foot, for an hour?







                    share|improve this answer












                    share|improve this answer



                    share|improve this answer










                    answered 2 hours ago









                    analogsystemsrf

                    12k2616




                    12k2616




















                        up vote
                        0
                        down vote













                        Technically, a person with mass of 100 kg walking in 1-m steps at 2 m/s (about 4.5 miles per hour) has to generate/use about 500 W of power, as this article illustrates. So if you have some device embedded into your shoes, harvesting extra 10 W should be doable, especially since you need the charge for 1 hour only (smartphone batteries have about 10 W-hr capacity, and if we neglect conversion losses). So adding 2% load to the walking effort should do the job. How comfortable these shoes will be is another question.



                        There were attempts to use the energy harvesting inside shoes, but the results were not very impressive, 3-4 mW.



                        There are even instructables how to make "shoe generator" out of parts from rechargeable flashlight, so this method likely generates more than few milliwatts.






                        share|improve this answer


























                          up vote
                          0
                          down vote













                          Technically, a person with mass of 100 kg walking in 1-m steps at 2 m/s (about 4.5 miles per hour) has to generate/use about 500 W of power, as this article illustrates. So if you have some device embedded into your shoes, harvesting extra 10 W should be doable, especially since you need the charge for 1 hour only (smartphone batteries have about 10 W-hr capacity, and if we neglect conversion losses). So adding 2% load to the walking effort should do the job. How comfortable these shoes will be is another question.



                          There were attempts to use the energy harvesting inside shoes, but the results were not very impressive, 3-4 mW.



                          There are even instructables how to make "shoe generator" out of parts from rechargeable flashlight, so this method likely generates more than few milliwatts.






                          share|improve this answer
























                            up vote
                            0
                            down vote










                            up vote
                            0
                            down vote









                            Technically, a person with mass of 100 kg walking in 1-m steps at 2 m/s (about 4.5 miles per hour) has to generate/use about 500 W of power, as this article illustrates. So if you have some device embedded into your shoes, harvesting extra 10 W should be doable, especially since you need the charge for 1 hour only (smartphone batteries have about 10 W-hr capacity, and if we neglect conversion losses). So adding 2% load to the walking effort should do the job. How comfortable these shoes will be is another question.



                            There were attempts to use the energy harvesting inside shoes, but the results were not very impressive, 3-4 mW.



                            There are even instructables how to make "shoe generator" out of parts from rechargeable flashlight, so this method likely generates more than few milliwatts.






                            share|improve this answer














                            Technically, a person with mass of 100 kg walking in 1-m steps at 2 m/s (about 4.5 miles per hour) has to generate/use about 500 W of power, as this article illustrates. So if you have some device embedded into your shoes, harvesting extra 10 W should be doable, especially since you need the charge for 1 hour only (smartphone batteries have about 10 W-hr capacity, and if we neglect conversion losses). So adding 2% load to the walking effort should do the job. How comfortable these shoes will be is another question.



                            There were attempts to use the energy harvesting inside shoes, but the results were not very impressive, 3-4 mW.



                            There are even instructables how to make "shoe generator" out of parts from rechargeable flashlight, so this method likely generates more than few milliwatts.







                            share|improve this answer














                            share|improve this answer



                            share|improve this answer








                            edited 9 mins ago

























                            answered 21 mins ago









                            Ale..chenski

                            24.7k11857




                            24.7k11857




















                                Philip is a new contributor. Be nice, and check out our Code of Conduct.









                                 

                                draft saved


                                draft discarded


















                                Philip is a new contributor. Be nice, and check out our Code of Conduct.












                                Philip is a new contributor. Be nice, and check out our Code of Conduct.











                                Philip is a new contributor. Be nice, and check out our Code of Conduct.













                                 


                                draft saved


                                draft discarded














                                StackExchange.ready(
                                function ()
                                StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2felectronics.stackexchange.com%2fquestions%2f403835%2fphysical-effort-in-outputting-5v-1-2a%23new-answer', 'question_page');

                                );

                                Post as a guest













































































                                Popular posts from this blog

                                How to check contact read email or not when send email to Individual?

                                Displaying single band from multi-band raster using QGIS

                                How many registers does an x86_64 CPU actually have?