Design a decoder to convert the 421 BCD code to drive the 7-segment LED display to indicate alphabets A to H as shown in Figure Q3(a). It is required to build this module using minimum number of NOR gates ONLY.

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Design a decoder to convert the 421 BCD code to drive the 7-segment LED
display to indicate alphabets A to H as shown in Figure Q3(a). It is required to
build this module using minimum number of NOR gates ONLY.
Q3.
(a)
2
3
5
6
7
8888866
A
B C
DE F G H
a
| Off = "0
On = '1
e
P.
Figure Q3(a)
(i)
Design the truth table for this module.
(ii)
Derive the logic equations for this module.
(iii) Build this module using minimum number of NOR gates ONI Y.
Sketch the timing diagram of the decoder inputs in order to display 3 alphabets
"ECG" sequentially.
(b)
Figure Q3(a) needs to be redesigned to support a total of 26 alphabets from A
to Z. Briefly discuss the consideration and impact to the design and
implementation of the module. Keep in mind that we want to achieve a
minimum circuit implementation.
(c)
Transcribed Image Text:Design a decoder to convert the 421 BCD code to drive the 7-segment LED display to indicate alphabets A to H as shown in Figure Q3(a). It is required to build this module using minimum number of NOR gates ONLY. Q3. (a) 2 3 5 6 7 8888866 A B C DE F G H a | Off = "0 On = '1 e P. Figure Q3(a) (i) Design the truth table for this module. (ii) Derive the logic equations for this module. (iii) Build this module using minimum number of NOR gates ONI Y. Sketch the timing diagram of the decoder inputs in order to display 3 alphabets "ECG" sequentially. (b) Figure Q3(a) needs to be redesigned to support a total of 26 alphabets from A to Z. Briefly discuss the consideration and impact to the design and implementation of the module. Keep in mind that we want to achieve a minimum circuit implementation. (c)
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