题目内容

The main components of the computer are ()

A. CPU, memory, I / O
B. CPU, keyboard, monitor
C. Host, external device
D. All of the above

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Intel 8051 CPU is a () bit MCU

A. 16
B. 4
C. 8
D. Quasi-16(准16位)

For Intel 8051, EA pin is always ()

A. Grounding
B. Connect the power supply
C. Hanging in the air
D. No

In computer, ‘a ’is represented by ()

A. BCD code
B. Two-one-one decimal code
C. Remaining three yards(余三码)
D. ASCII code

In single chip microcomputer, some intermediate results are usually put in ()

Accumulator
B. Controller
C. Program memory
Data storage

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