超星 - 第八章作业--单片机的并行扩展 - 查题吧

单选题

For 8051 single chip microcomputer, its internal RAM 20h-2FH unit is used.

A. Bit only addressing
Byte addressing only
C. It can be bit addressable and byte addressable
D. Only a few bits can be addressed

单选题

After the MCS-51 is reset, the MCU starts to execute instructions from the () unit of ROM.

A. 0001H
B. 0000H
C. 0003H
D. 0023H

单选题

The program counter PC of 8051 is a 16 bit counter, and its addressing range is ()

A. 8K
B. 16 K
C. 32 K
D. 64 K

判断题

Mode 0 of. 82c55 is unconditional input and output mode.

A. 对
B. 错

判断题

82c55 is a programmable chip.

A. 对
B. 错

判断题

82c55 has three state buffer, so it can be directly linked to the data bus of the system.

A. 对
B. 错

判断题

The PB port of 82c55 can be set to mode 2.

A. 对
B. 错

判断题

The extended I / O occupies the address resources of the off chip data memory.

A. 对
B. 错

判断题

Mode 1 of 82c55 is unconditional input and output mode.

A. 对
B. 错

判断题

82c55 PC port can be reset by position.

A. 对
B. 错

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