Question

+5 V A6 A5 A4 A3 A7 Switches +5 V Data Tri-State Bus Buffer IOR E1 E2 E3 MSB 3-to-8 Decoder F8H EN IOSEL O2 A2 A1 A0 F8H O0 IOW Data Bus Latch LEDS +5 V EN IOSEL Address Decoding Using a 3-to-8 Decoder A7 A6 A5 A4 A3 1 1 1 1 1 ? Decoder Enable A2 A1 A0 0 0 0 = F8H ? Input

          +5 V
A6
A5
A4
A3
A7
Switches
+5 V
Data Tri-State
Bus Buffer
IOR
E1 E2 E3
MSB
3-to-8
Decoder
F8H
EN
IOSEL
O2
A2 A1 A0
F8H
O0
IOW
Data
Bus
Latch
LEDS
+5 V
EN
IOSEL
Address Decoding Using a 3-to-8 Decoder
A7 A6 A5 A4 A3
1 1 1 1 1
?
Decoder Enable
A2 A1 A0
0 0 0 = F8H
?
Input

+5 V
A6
A5
A4
A3
A7
Switches
+5 V
Data Tri-State
Bus Buffer
IOR
E1 E2 E3
MSB
3-to-8
Decoder
F8H
EN
IOSEL
O2
A2 A1 A0
F8H
O0
IOW
Data
Bus
Latch
LEDS
+5 V
EN
IOSEL
Address Decoding Using a 3-to-8 Decoder
A7 A6 A5 A4 A3
1 1 1 1 1
?
Decoder Enable
A2 A1 A0
0 0 0 = F8H
?
Input

Added by Sofia P.

University Physics with Modern Physics

Hugh D. Young 14th Edition

Instant Answer

Solved by Expert Adi S

09/17/2023

Step 1

In this case, we need 8 ports - 4 input ports and 4 output ports. Show more…

Show all steps

Thanks for your feedback!

Texts: question is: design a decoder based I/O interfacing like pg91 attached below with 8 ports (4 input, 4 output), indicate port addresses. +5V Switches +5V Data Bus Tri-State Pull-Up IOR EEE MSB 3-to-8 A2 Decoder FAH AI O2 A F8H Oa EN IOSEL Data Bus Latch LEDs +5V M Kiw EN IOSEL IOW Address Decoding Using a 3-to-8 Decoder AA6AsAA 11111 AAAo Decoder Enable Input