Cs302
2 Marks
• Write down at least two applications of a shift register
• Function Table of 2-to-4 decoder
• What kind of devices uses the shift register based First in First out (FIFO) memory?
• Some of the counters (e.g. 74HC163) are called pre-set counters. Why?
3 Marks
§ Characteristics of Serial In/ Serial Out 4-bit left shift register
§ How many 16K x 1 RAMs are required to memory or word size 16K with a word length
of 8- bit?
§ Draw the circuit of NAND based S-R Latch
§ You are given the block diagram of 74HC190 integrated circuit up/down counter, explain
the function of labeled inputs/outputs.
5 Marks
o Simplify the Boolean Expression
o (A + B)(A + B')
o (A + B)'(A' + B')'
o Define Memory Select or Enable Single.
o Briefly Describe address multiplexing in DRAM.
o Next state table of Mealy Machine (Show present Sate, Next State and Output)
) Define the process of state assignment? 2
2) Define the excitation input? 2
3) Convert 32kb*4 memory into the byte? 2
4) Draw the half adder table? 3
5) State the monotonicity of the digital to analog divider? 3
6) Differentiate between the counter and shift register? 3
7) How many different sets of input condition will produce the logic high (1) from the five inputs of OR gate? 3
8 ) Define the three types of the ROM? 3
8 ) Define the burst form of synchronous SRAM with example? 5
9) The five sates a,b,c,d,e write the two statement assignment that leads to the simplercircuit and the next sate? 5
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Zindagi mein 2 Logo ka buhat khayal rahkoooo
Ist woh jiss ney tumhari jeet ke Liye buhat kuch hara hoo (Father)
2nd woh jiss ko tum ney har dukh me pukaara hoo (Mother)
Regards,
Umair Saulat
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