题目内容

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

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

A. 对
B. 错

82c55 is a programmable chip.

A. 对
B. 错

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

A. 对
B. 错

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

A. 对
B. 错