Design a circuit to display decimal equivalent of an input 4-bit number given in 2s complement form on a pair of 7-segment displays with the left hand side display is for the sign and the right hand side is for the magnitude. For the right display showing the magnitude, assume that we have the decoder shown in Figure 2.47 (7-segment display decoder). On the left display, compute the values of the segments (specifically, the g segment) of the 7-segment display using the following: blank is shown to indicate positive numbers and minus sign - for negative numbers). You may use 74x283. For example, if the input is 0111 then the display is 07, if the input is 1111 then the display is -7.

7-segment 4 display D decoder s Figure 2.47 Seven-segment display decoder icon