Question

Design an 0-7 modulo-8 counter using 74LS160. (two methods required)

Answer 1

Two methods for designing an 0-7 modulo-8 counter using the 74LS160 are explained.

Step-by-step explanation:

To design an 0-7 modulo-8 counter using the 74LS160, you can use two methods:

Method 1:

1. Configure the 74LS160 as a modulo-16 counter by connecting SL0 and SL1 pins to ground.
2. Connect QA, QB, QC, and QD to the inputs of a 4-bit AND gate, with D as the output.
3. Connect D to the SET input and the /QD output to the RESET input. This creates a loop allowing the counter to count from 0 to 7 repeatedly.

Method 2:

1. Configure the 74LS160 as a modulo-16 counter, as in Method 1.
2. Use a decoder, such as a 3-to-8 decoder, to decode the output of the counter. Connect the three least significant output lines (QA, QB, QC) to the decoder inputs.
3. Connect the eight decoder outputs to the eight count enable inputs of the 74LS160. This allows direct control of the counter's transitions from 0 to 7.