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ST Microelectronics

there were two papers
1. separate for the hardware (electonics people)
2. and other for the software (comp).

Software paper

There were 3 sections the questions in these sections were mixed with 2-3 aptitude question, questions on comp n/w & OS were 7-8, 1-2 on CSO, 1 que on controls, 1 on sampling theorem some on Comp Arch. & digital logic & 7-8 on C.

section 1 contains 11 questions
section 2 contains 13 que
section 3 contains 13 que ( total = 37 que , marks= 50)

All the 3 sections was compulsary and u,ve to give a preference among the section 2 & sec 3 so that the weightage for the second one will get doubled. Negative marking was there.

here are some of the ques which i remember

1. which conversion is not possible
 a. float to int
 b. int to float
 c. char to float
 d. all are possible
 Ans: d

2. threads have which thing in common
 a. register set
 b. data section
 c. thread id
 d. ...
 Ans : b

3. one que like
 main()
 {
 int x=5, y;
 y= x*x++ * ++x ;

 // print x and y
 }

4. A CPU has four group of instruction set A, B, C, D
 CPI of A = 1
 CPI of B=3
 Cpi of c =2
 cpi of d= 4
 the cpu access 20% of A, 30% of b, 30% of C and 20 % of D
 what will be the average CPI.
 
 Ans: 1*20/100 + 3* 30/100 + 2* 30/100 + 4* 20/100
( this que was repeated in section 2 & 3)

5 . a question on hit ratio n effective memory access time.

6.  main()
 {
 int a=10,b=5
 while ( --b>=0 && ++a)
 {
 --b;
 ++a;
 }
 print (a);
 print (b);
 }
 ans: a=16, b=-2

7. main()
 {
 char i;
 
 for (i=0; i