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4 line to 16 line decoder using 8051


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Arun Kumar V

Tue Jul 01 2008, 03:06AM

Registered Member #426

Joined: Sun Jan 28 2007, 11:50PM

Posts: 521
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Hello friends,

recently one of the friends from this forum asked me a favour to write a assembly code for his project, the project objective was to receive input on 4 port pins , decode and put the output on 2 ports for eg: if input on p2 is 0001 then p1.0 should become 1 so on. there are 16 states and only one output can be ON at a time.

i felt it was similar to 4line to 16 line decoder used in DTMF projects and thumbwheel projects and later came to know he intends to use this in his 4 bit RF Tx and Rx project.

here's the code with comments, i have used a optimised code approach and differed from the conventional CJNE approach ( this way the task is completed in less number of machine cycles and fast which is useful if the input changes rapidly)

: code deleted by Arun

hope its useful for some body

Arun

[ Edited Tue Jul 15 2008, 01:44AM ]

4 LINES TO 16 LINES DECODER USING 8051 digital decoder using 8051

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Anonymous | 08 Jan : 07:26

HI,
HOW DO I CREATE A .ASM FILE.HOW DO I BURN IT TO MY MICROCONTROLLER.in other words, what all do i need n where do i download the stuff that i need to creat a .ASM file n burn it to AT89C2051

Ajay | 08 Jan : 00:58

well thats not a good idea.. maybe it is.. but lot of work on that..