Note: Attempt question no. 1 which is compulsory (carries 14 marks ) and other 4 questions (carried 9 marks each ) .Five questions are to be answered in all .
1.(a) Draw the graphic –symbols ob Basic –gates.
(b) Write HELLO in ASCII code .
(c) Add 10011.012 and 1101.102
(d)Find 2’s complement of 1001101.01 )2 ?
(e)Subtract 745610 from 9854 10 using 10’s complement .
(f) Prove (x+y)’=x-.y- (bar) using postulates of Boolean-Algebra .
(g) Draw the logic-diagram only of a half adder circuit.
2.(a) What do you mean by universal-gates ?give anyone examples of each in support of your answer.
(b)write any postulates and prove it .
3.(a) Differentiate between SRAM and DRAM.
(b) A ROM whose organization is 64 K x 16 ,find the address lines ,output lines ,word length and capacity of ROM?
4 (a) Discuss LAN ,MAN ,and WAN in Networks .
(b) Using word processing ,create a file ,rename the file ,and save the file .
5(a)Using 3 x 8 decoder ,Construct a full adder .
(b)What is internet? Discuss in detail .
6.(a) How a cache memory is organized to speed up the computer ?what is the hit ratio ?
(b) Discuss in detail about Hard-Disk.
7.(a)Discuss JK-FF with it characteristic-table.
(b)What is computer –virus ?Discuss in detail.
8 .Write short note on any of any two following :
(a)RS-Filp Flop
(b) Desktop Icon “My computer ”
(c) E-Mail
(d) ROM
(e) Power Point
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