q digital watches display time by turning on a

Question

Q. Digital watches display time by turning on a certain combination of the seven-segment display device.

(a) Show a typical seven-segment display.

(b) Develop a truth table for turning on the segments. The truth table should have inputs W, X, Y, and Z to represent the binary equivalents of the decimal integers, and outputs S₀, S₁,..., S₇.

(c) Develop a typical circuit for one segment, S₀.

(d) Show a schematic diagram of the seven- segment decoder/driver block (available in IC form).