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Figure 1 shows part of a circuit that includes a 4-bit binary counter - AQA - A-Level Physics - Question 1 - 2020 - Paper 8
Question 1
Figure 1 shows part of a circuit that includes a 4-bit binary counter. The main inputs and outputs of the counter are shown. The counter generates a sequence of bina... show full transcript
Worked Solution & Example Answer:Figure 1 shows part of a circuit that includes a 4-bit binary counter - AQA - A-Level Physics - Question 1 - 2020 - Paper 8
Step 1
Complete Figure 1 to show how both reset conditions can be met.
Answer
To complete Figure 1, first, a logic OR gate should be connected to the master reset (MR) pin. The outputs from the switch P (for manual reset) and a decoder that checks for the binary outputs corresponding to decimal numbers will be the two inputs of the OR gate. This configuration ensures that either the manual reset or the automatic reset will activate the counter reset functionality.