ST MIcroelectronics Important Technical Question Paper

ST Microelectronics Placement Paper Recruitment Job Test on 15th November

PART- A
a. Some Aptitude questions

Basic computer hardware and electronics questions:

b. Virtual memory Vs physical memory

c. Whats the role of Cycle stealing and hows it related to DMA?
d. Where are Conditional operations stored? (flag seg)
e. About Stack of heap
f. Electronics basic: About charging of MOS transistor
g. How does current get changed with change in
h. Tell about the Time constant of RL network
i.One more question on RL network
j. A K Map is given and solve the question.
k. W/L relation is provided. Find the value of resistance of MOS Transistor.

PART - 2

1. A Question on counters

2. Find the 2's Complement of a number.

3. What is the maximum operating frequency of a sequential network (166.66 MHz)

4. Microprocessor question
5. Here is a sampling related question where you have to find out the frequency component in the O/P. Sampling is done at 210 Hz of a signal containing 50, 100 & 150 Hz signal. Then the signal is passed there a LPF of 10.5 Mz cut off frequency. What is the freq component of the output?
6. A question on a consolidated current source
7. You have to find out the Signal to Noise Ratio or SNR & bandwidth in the question.

Also a question of multivibrators using 55513 and on transmission lines. These are mostly B.tech electronics branch related questions.