Electronics and Communication Engineering:: Microprocessors

The chip 8254 is a 40 pin programmable interval timer. The number of its independent 16 bit counters is

A. 2
B. 3
C 4
D. 5

DS directive in 8085

A. forces the assembler to reserve one byte of memory
B. forces the assembler to reserve a specified number of bytes in the memory
C forces the assembler to reserve a specified number of consecutive bytes in the memory
D. none of the above

When .9432 E - 4 is subtracted from .5452 E - 3 in normalized floating point mode

A. none of the numbers is changed
B. .9432 E - 4 is changed to .09432 E - 3 and .5452 E - 3 is not changed
C .5452 E - 3 is changed to 5.452 E - 4 but .9432 E - 4 is not changed
D. both Ihe numbers are changed and their exponents are, made equal to -5

MS Access is a DBMS software.

A. True
B. False

An I/O processor controls the flow of information between

A. cache memory and I/O devices
B. main memory and I/O devices
C two I/O devices
D. cache and main memory

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