Description: System power-on reset, the system in a wait state, when there are key K0 to K7 action, single-chip will be the key actions 0-7 serial number is sent to the SERDES 74LS164 chip, the 74LS240 driver chips 74LS164 make digital tube shows the corresponding button number keys.
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项目七
......\UNTITLED.DSK
......\XM07.ASM
......\XM07.BIN
......\XM07.HEX
......\项目七.doc
......\项目七图.doc
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