软件类英文笔试题

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11. What will be the output of the follow C code?

define product(x) (x*x)
main()

{

int i = 3, j, k;

j = product(i );

k = product( i);

printf(%d %d,j,k);

}

12. Simplify the following Boolean expression!((i ==12) || (j 15))

13. How many flip-flop circuits are needed to divide by 16?

14. Provides 3 properties that make an OS, a RTOS?

15. What is pre-emption?

16. Assume the BC register value is 8538H, and the DE register　value is 62A5H.Find the value of register BC after the following　assembly operations:

MOV A,C

SUB E

MOV C,A

MOV A,B

SBB D

MOV B,A

17.In the Assembly code shown below

LOOP: MVI C,78H

DCR C

JNZ LOOP

HLT

How many times is the DCR C Operation executed?

18.Describe the most efficient way(in term of execution time　and code size) to divide a number by 4 in assembly language

19.what value is stored in m in the following assembly language code　fragment if n=7?

LDAA #n

LABEL1: CMPA #5

BHI L3
 

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