8051 unit

Microprocessor: i80c31, its P1 port and P3 mouth are open for users to use.

Clock frequency: 6.0MHz

The basic experiment of 8051 can be provided

In order to improve the quality of computer experiment teaching, improve the efficiency of the experiment, reduce the labor intensity of speaker teachers and experimental teachers, on the experiment of the system board, in addition to the microprocessor, program memory, data memory, also added 8255 parallel interface, serial controller, keyboard, display controller 8279, 8250, 8253 programmable timer, A/D, D/A conversion, single pulse, various frequency of pulse generator, input and output circuit module, each part of the circuit is independent, and flexible combination, can meet all kinds of schools, different levels of microcomputer experiment and training requirements. 

Memory: the unified addressing of program memory and data storage can reach up to 64k, and the onboard ROM (monitoring program 27C256) 12k; RAM1 (program memory 6264)8k for user to download the experiment program, can be expanded to 32k; RAM2 (data storage 6264)8k for user program use, can be extended to 32k. (RAM program memory and data storage cannot be expanded to 32k at the same time, specific to manufacturer’s contact). (see figure 1-1: memory organization chart). In the program memory, 0000H– 2FFFH is the monitoring program memory area, the user is not available, 4000H– 5FFFH is the storage area for the user experimental program, for the user to download the experiment program. The range of data storage is: 6000H- 7FFFH for user experiment program.

The available experiments are as follows:

Input and output experiment of 8051P1

Simple extension input and output experiment

8279 keyboard scanning, LED display experiment

8255 parallel port input and output experiment

8051 timer/counter experiment

and 8051 external interrupt experiment

8253 timer/counter experiment

and 8259 interrupt experiments

The DAC0832 D/A conversion experiment

Serial port communication experiment

ADC0809 A/D conversion experiment

Memory expansion experiment

Traffic light control experiment.