1
GATE ECE 1997
Subjective
+5
-0
A sequence generator is shown in figure. The counter status (Q0 Q1 Q3) is intialized to 010 using preset/clear inputs.
The Clock has a period of 50ns and transitions take place at the rising clock edge.
(a) Give the sequence generated at Q0 till it repeats.
(b) What is the repetition rate for the generated sequence? GATE ECE 1997 Digital Circuits - Sequential Circuits Question 24 English
2
GATE ECE 1997
MCQ (Single Correct Answer)
+1
-0.3
In standard TTL the 'totem pole' stage refers to
A
the multi-emitteer input stage
B
the phase splitter
C
the output buffer
D
open collector output stage
3
GATE ECE 1997
MCQ (Single Correct Answer)
+1
-0.3
A 2-bit binary multiplier can be implemented using
A
2 input AND gates only.
B
2 number of 2-input XOR gates and 6 number of 2-input AND gates.
C
Two 2-input NOR gates and one XNOR gate.
D
XOR gates and shift registers.
4
GATE ECE 1997
MCQ (Single Correct Answer)
+1
-0.3
The gate delay of an NMOS inverter is dominated by charge time rather than discharge time because
A
the driver transistor has a larger threshold voltage than the load transistor.
B
the driver transistor has larger leakage currents compared to the load transistor.
C
the load transistor has a smaller W/L ratio compared to the driver transistor
D
none of the above