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Neha Agarwal
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Quote Neha Agarwal Replybullet Topic: Digital Electronics sample qns.
    Posted: 09Jan2007 at 6:41pm


Que. 1 in serial communication employing 8 data bits,a parity bit and 2 stop 
bits, the minimum band rate required to sustain a transfer rate of 300 
charecters per secound is
A
2400 band
B
19200 band
C
3300 band
D
1200 band

Que. 2 the ASCII code is for inforation interchange by a binary code for
A
numbers only
B
alphabets only
C
alpha numerics and other common
D
none of these

Que. 3 Traffic light on road are example of
A
close loop system
B
open loop system
C
both open loop and close loop
D
open loop but can be made close loop

Que. 4 how many address lines are needed to address each memory location in a 
2048*4 memory chip?
A
10
B
11
C
8
D
12

Que. 5 which code is used in Baudot system?
A
five unit
B
seven unit
C
morse
D
ASCII

Que. 6 the advantage of the  self correcting code is
A
it is a weighted code
B
it has even parity
C
it is easy to decode electronically
D
all of these

Que. 7 The number -34 is represented in Excess-3 BCD code is
A
1,1001 1000
B
0,1001 1001
C
1,0110 0011
D
0,0110 0111

Que. 8 which of the following is not a charecteristic of rise processor design?
A
one instruction per cycle
B
registor to registor operations only
C
simple address modes
D
registor to memory operations only

Que. 9 The octal representation of an integer is (342)8 if this were to be treated 
as an eight bit integer in an 8085 based computer its decimal equivalent is
A
226
B
-98
C
76
D
-30

Que. 10 A storage medium with cannot support both direct access and sequential 
access application is
A
magnetic drup
B
hard disk
C
magnetic tape
D
floopy drive




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