Figure 12-41 shows a simple ci

Figure 12-41 shows a simple circuit for manually programming a 2732 EPROM. Each EPROM data pin is connected to a switch that can be set at a 1 or a 0 level. The address inputs are driven by a 12-bit couter. The 50-ms programming pulse comes from a one-shot each time the PROGRAM push button is actuated.

(a) Explain how this circuit can be used to program the EPROM memory locations sequentially with the desired data.

(b) Show how 74293s and a 74121 can be used to implement this circuit.

(c) Should switch bounce have any effect on the circuit operation?

 

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