This section contains more frequently asked Microprocessors 8085 Basics MCQs in the various University Level and Competitive Examinations.
PRACTICE IT NOW TO SHARPEN YOUR CONCEPT AND KNOWLEDGE
1. The no. of address lines required to address a memory of size 32 K is
- 15 lines
- 16 lines
- 18 lines
- 14 lines
A. 15 lines
2. The no. of wait states required to interface 8279 to 8086 with 8MHz clock are
- Two
- Three
- One
- None
A. Two
3. NMI input is
- Edge sensitive
- Level sensitive
- Both edge and level triggered
- edge triggered and level sensitive
D. edge triggered and level sensitive
4. Data rate available for use on USB is
- 12 Mbits per second
- 1.5 Mbits per second
- Both (A) and (B)
- No restriction
C. Both (A) and (B)
5. In 80186, the timer which connects to the system clock is
- timer 0
- timer 1
- timer 2
- Any one can be connected
C. timer 2
6. Conversion of the +1000 decimal number into signed binary word results
- 0000 0011 1110 1000
- 1111 1100 0001 1000
- 1000 0011 1110 1000
- 0111 1100 0001 1000
C. 1000 0011 1110 1000
7. What do the symbols [ ] indicate?
- Direct addressing
- Register Addressing
- Indirect addressing
- None of the above
C. Indirect addressing
8. SDRAM refers to
- static DRAM
- synchronous DRAM
- sequential DRAM
- semi DRAM
B. synchronous DRAM
9. Which pins are general purpose I/O pins during mode-2 operation of the 82C55?
- PA0 – PA7
- PB0-PB7
- PC3-PC7
- PC0-PC2
A. PA0 – PA7
