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Microprocessor

Microprocessor
Identify the communication interfacing device from the following

 8257
 8255
 8155
 8251

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Microprocessor
A microprocessor with a 12-bit address bus will be able to access

 8 K bytes
 1 K bytes
 10 K bytes
 4 K bytes

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Microprocessor
The maximum number of seven segment displays that can be connected to 8279 is

 8
 18
 12
 16

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Microprocessor
Which of the following is a valid integer constant?

125 + 3
127
127
127

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Microprocessor
In a microcomputer , the address of memory locations are binary numbers that identify each memory circuit where a byte is stored. If a microcomputer uses 20-bit address, then numbers of different memory locations are

 20
 220-1
 220
 220 - 1

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Microprocessor
Using one 8259 IC is equivalent to providing …………. INTR pins on 8085

 18
 8
 16
 12

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