8052 Microcontroller :
8048 and MCS-48 made designing with Microprocessors easy with built in
I/O ports, RAM and
Timer. The I/O ports for the 8085 was an external 8255. 8749
enabled users to burn and test firmware
on an integrated UV Eprom.
80C51-52 which came out as the fully evolved uC had built in Serial
Ports UART and more Math, better Timer-Counter and Interrupt Handling.
The 'C' is for CMOS that made handheld instruments possible due to low
battery usage and lesser support chips.
The Assembly Code MCS-51
set is used to program the chip.
There is a 8052 Basic that can understand the Basic Language, useful
for people
who are not comfortable with mnemonics.
Now we have 8051 chips with EE Flash and some have a watchdog and I2C
too.
Anantha Narayan 06:48 20-Apr-07
8051 SBC Operating System :
This is a 8051 Operating System ;-) . In an old elektor
issue, around 1990 perhaps, i got a 8031 circuit and monitor code by
Grodzik. This helped me interface a 8051 to PC via RS232-serial-comm
port. And use HyperTerminal
to transfer and receive bits-n-bytes to the outside world.
I am not sure if it is properly documented for
DIY, but it is put back due to the search on my website. dact2007.asm.html,
- equat.asm.html,
- prog.asm.html
8051-OS-SRC.zip
A zip file with the code.
80C51 SBC code examples here 80C51-RS232.zip.
This was a Serial Interface of ICL7135 14 BIT 4 1/2 A-D with
80C31.
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