计算机程序员笔试题

  1. Simplify the following Boolean expression

!((i ==12) || (j > 15))

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

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

4. What is pre-emption?

5. Assume the BC register value is 8538H, and the DE register value is 62 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

6. In the Assembly code shown below

LOOP: MVI C,78H

DCR C

JNZ LOOP

HLT

How many times is the DCR C Operation executed?