A coin detector in a vending machine accepts quarters, dimes, and nickels and activates the corresponding digital
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A coin detector in a vending machine accepts quarters, dimes, and nickels and activates the corresponding digital signal (Q, D, N) only when the correct coin is present. It is physically impossible for multiple coins to be present at the same time. A digital circuit must use the Q, D, and N signals as inputs and produce a binary number representing the value of the coin as shown in Figure 4-65. Write the AHDL and VHDL code.
Figure 4-65
Transcribed Image Text:
Insert Coin Quarter Dime Nickel Logic Circuit D cents[4.00] N Five-bit array representing coin value
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Related Book For
Digital Systems Principles And Application
ISBN: 9780134220130
12th Edition
Authors: Ronald Tocci, Neal Widmer, Gregory Moss
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