1
GATE ECE 1994
True or False
+2
-0
In the output stage of a standard TTL, we have a diode between the emitter of the pull up transistor and the collector of the pull-down transistor. The purpose of this diode is to isolate the output node from the power supply $${V_{cc}}$$.
A
TRUE
B
FALSE
2
GATE ECE 1994
MCQ (Single Correct Answer)
+1
-0.3
A PLA can be used
A
as a microprocessor
B
as a dynamic memory
C
to realize a sequential logic
D
to realize a combinational logic
3
GATE ECE 1994
Subjective
+10
-0
A Boolean function, F , given as sum of product (SOP) terms as F= $$\sum {} $$m(3,4,5,6) with A,B, and C as inputs. The function, F, can be expreeed on the Karnaugh's map shown below.

(1) What will be the minimized SOP expression for F?
(2) Implement this function on an 8 : 1 MUX.

4
GATE ECE 1994
Fill in the Blanks
+1
-0
Synchronous counters are _____ than the ripple counters.