Question

The Assignment: Create a second-timer circuit. Decade counters such as 74160 produce four bit binary codes that are BCD codes for the decimal digitals 0 to 9. The chip 7447 can be used to convert a BCD code to the corresponding decimal digit in the form of seven segment signals which can be displayed on a seven segment display unit. You can use two decade counter 74160 chips, each one connects to a 7447 chip, then, use the OneHz Clock chip to drive the counters and display the outputs of 7447 on the two seven segment display units. In this way, you can create a second-timer which wil display time in seconds as 01, 02, .., 23, . 35, ...99 Please draw a diagram on the back side of the paper to show such a circuit with one input called On to turn the timer on, and another input called Clock. The Clock input should be used to trigger the decade counters. The On input should be used in such as way so that the two decade counter should be cleared when it is low, and the decade counter for the first digit should be turned on when the On input is high. The two 7447 chips should be turned off or blanked when the On input is low, which can be achieved by using RBIN pins. Please provide all the details.

how would i draw this circuit

Answer 1