key.hex

这里很详细地将了怎样编写一个4*4的行列扫描式键盘（它已经通过keil编译并使用）。该程序利用P1口作为行列扫描端口,它能够识别是否有多键按下

:03000000020220D9
:0C022000787FE4F6D8FD758122020026EC
:0D0003007F707E17EF1F70011EEF4E70F72B
:0100100022CD
:05022C00D210D299225E
:03002300020011C7
:0E00110030990AC299301005850899C2103244
:10002600C210758920759850E4F587758DFD758B1E
:10003600FDD28ED2ACD2AFC294D295D296D297A22E
:10004600909208A2919209A292920AA293920B53BD
:10005600210FE521640F604E120003A2909200A2C8
:10006600919201A2929202A293920353200FE5214C
:1000760065207032E52124F9601A24FC601124FE03
:100086006008147012750801800D750805800875E2
:100096000809800375080D12022C3090FD3091FA84
:1000A6003092F73093F4D294C295D296D297A2901A
:1000B6009208A2919209A292920AA293920B5321BC
:1000C6000FE521640F604E120003A2909200A291E8
:1000D6009201A2929202A293920353200FE5216508
:1000E600207032E52124F9601A24FC601124FE6098
:1000F60008147012750802800D75080680087508C8
:100106000A800375080E12022C3090FD3091FA30E9
:1001160092F73093F4D294D295C296D297A2909247
:1001260008A2919209A292920AA293920B53210FCE
:10013600E521640F6003120003A2909200A291923F
:1001460001A2929202A293920353200FE521640F1B
:10015600604E120003A2909200A2919201A2929286
:1001660002A293920353200FE52165207032E52108
:1001760024F9601A24FC601124FE600814701275BC
:100186000803800D750807800875080B800375083D
:100196000F12022C3090FD3091FA3092F73093F422
:1001A600D294D295D296C297A2909208A291920921
:1001B600A292920AA293920B53210FE521640F702B
:1001C6000302003D120003A2909200A2919201A2A6
:1001D600929202A293920353200FE52165206003B9
:1001E60002003DE52124F9601A24FC601124FE601A
:1001F60008147012750804800D75080880087508C3
:100206000C800375081012022C3090FD3091FA30E4
:0A02160092F730930302003D80EFE1
:00000001FF