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Microprocessor

Microprocessor
Using DeMorgan’s Theorem we can convert any AND-OR structure into

NAND-NAND
NAND-NOR
OR-NAND
NOR-NAND

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Microprocessor
In C the keywords are also called

Reserved words
Class words
Character words
Special words

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Microprocessor
After RESET 8255 will be in

 mode 0; all ports are input
 unchanged condition
 mode 0; all ports are output
 mode 2

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Microprocessor
________used to implement the hardware interrupts (RST 7.5, RST 6.5, RST 5.5) by setting various bits to form masks or generate output data via the Serial Output Data (SOD) line.

 RIM
 SIM
 EI
 DI

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Microprocessor
A bus connected between the CPU and main memory that permits transfer of information between main memory and the CPU is known as

 Memory bus
 Control bus
 Address bus
 DMA bus

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Microprocessor
In an intel 8085A, which is the first machine cycle of an instruction?

 An op-code fetch cycle
 A memory read cycle
 An I/O read cycle
 A memory write cycle

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