Given the following two-digit counter with decimal output block diagram which is shown in Figure 14.Figure 14.

Figure 14. Block diagram of 2-digit counter with decimal output

A. If the 7-segment displays read decimal 85, specify the BCD code between the counter and decoders.

B, Refer to the data sheet for 74147 encoder IC (ONLINE) . If only input 7 of the 74147 encoder is low, what is the logic state at each of the four outputs?

C. Refer to the data sheet for 74147 encoder IC(ONLINE). If both inputs 2 and 8 go LOW on the 74147 encoder, what is the logic state at each of the four outputs

D. Refer to the 7447 IC data sheet (ONLINE) and the 7-segment display device. If segments a, c, d, f and g are lit

What is the expected decimal number that will appear on the 7-segment display?

What are the input requirements for the 7447 IC to produce this number?

E. Refer to the 7447 IC data sheet.(ONLINE) If the BCD input to the decoder/drive is 1000

Which segments on the display will light?

What decimal number will be shown on the 7-segment display device?

ONES Decoder/ Driver Counter 0-99 Clock TENS Decoder Driver Decimal Output Block