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/* 8051 Microcontroller.*/
8051 which is popularly known as AT89C51.
Main features of 8051 Microcontroller are :
RAM-128 bytes, ROM-4K bytes, Timer-2, I/O pins-32, Serial port, Interrupt sources
Comparing 8051 family members.
| Features | 8051 | 8052 | 8031 |
|
RAM(bytes)
|
128
|
256
|
128
|
|
ROM
|
4K
|
8K
|
0K
|
|
Timers
|
2
|
3
|
2
|
|
Serial port
|
1
|
1
|
1
|
|
I/O pins
|
32
|
32
|
32
|
|
Interrupt sources
|
6
|
8
|
6
|
For details on 8051 microcontroller click here
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