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Microprocessor

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

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

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Microprocessor
In 8085 which addressing mode is also called inherent addressing?

Implicit
Immediate
Register
Direct

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Microprocessor
Which one of the following statement is false?

 A microprocessor has bi-directional address bus
 A microprocessor has unidirectional address bus
 A microprocessor has an ALU
 A microprocessor has bi-directional data bus

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Microprocessor
Pick out the matching pair

 HOLD; DMA
 S0;S1;wait status
 SID; SIM
 READY; RIM

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Microprocessor
While STC instruction executes,

 no flags will be affected.
 all flags will be affected.
 only carry flag will be affected.
 only carry and zero flags will be affected.

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Microprocessor
The first machine cycle of an instruction is always

 A memory read cycle
 An I/O read cycle
 A fetch cycle
 A memory write cycle

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