2. You are to interface a keyboard to the microprocessor. The keyboard generates a 1-bit control signal, READY, which goes high when a key is pressed and then goes low when the ASCII character of the key is read by the microprocessor through the port at the address $6000. The control signal READY is connected to the LSB of the port at the address $6001 (a) Design the interface using a decoder 74LS139, random gates, and two
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