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Electronics and Communication Engineering - Digital Electronics

Exercise : Digital Electronics - Section 20
6.
An 8085 microprocessor based system uses a 4 k x 8 bit RAM whose address in AAOOH. The address of the last byte in this RAM is
OFFFH
1000H
B9FFH
BA00H
Answer: Option
Explanation:
No answer description is available. Let's discuss.
7.
Read the following statements: Dual slope ADC provides
  1. higher speed as compared to other ADC
  2. very good accuracy
  3. good rejection of power supply
  4. better resolutions compared to other ADC for the same number of bits
Which of the above are correct?
1 and 2
2 and 3
1, 2, 3
1, 2, 3, 4
Answer: Option
Explanation:
No answer description is available. Let's discuss.
8.
In 8085 microprocessor, how many I/O ports can be accessed by memory mapped method?
8
256
32 K
64 K
Answer: Option
Explanation:
No answer description is available. Let's discuss.
9.
The open wired circuit in the given figure works as a
EX - NOR gate
AND gate
XOR gate
NOR gate
Answer: Option
Explanation:
No answer description is available. Let's discuss.
10.
The circuit shown below is functionally equivalent to
NOR gate
OR gate
EX-OR gate
NAND gate
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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