Digital Logic Circuits Solution

The assignment content describes a microoperation sequence for a Quadruple MUX (Multiple-Input Selector) and its implementation using various logical operations. The sequence consists of several steps: loading, incrementing, and selecting from four inputs. It also includes the use of selection lines, AND, OR, EXOR, and NOT operations to generate the final output.

ANS.1.
x
LOAD y
ANS.2.
T1
Y
0 1 4
4
4
4
LOAD 4 4 4
LOAD
4
ANS.3.
M A B S C4
0 1111 0110 0101 1
1 0000 1000 1000 1
QUADRUPLE
2X1 MUX
INCREMENTER
R1ADDERR2
BR
ADDER
ADDER
AR

ANS.4.
A3 1 A2 1 A1 0 A0 0
C4 C3 C2 C1 C0=0
S3 S2 S1 S0
ANS.5.
A3 0
B3
C3
A2
B2
C2
A1
B1
C1
A0
B0
C0
S1 S0
(selection lines common to all MUX)
S1 S0 C3 C2 C1 C0 MICROOPERATION
0 0
0 1
1 0
1 1
C3=A3^B3
C3=A3vB3
C3=A3 B3
C3=A3’
C2=A2^B2
C2=A2vB2
C2=A2 B2
C2=A2’
C1=A1^B1
C1=A1vB1
C1=A1 B1
C1=A1’
C0=A0^B0
C0=A0vB0
C0=A0 B0
C0=A0’
AND
OR
EXOR
NOT
0
1
2
3
0
1
2
3
0
1
2
3
0
1
2
3
FA FA FA FA

ANS.6.
1). 10011000
2). 01100110
3). 10011000
4). 11100110
5). 10011001
6). 01100110
ANS.7.
 BR <- AR + CR
BR=10010001
 DR <- DR AND DR , CR <- CR – 1
DR=00001111 CR=10101001
 BR <- BR – AR
BR=00110001