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how can i produce a sound of particular frequency using 89c52 i want to know the commands in c51 compiler(asembler code).....i need it very urgently...........plz help
There are no such command.
But you can generate sound in the same way the original PC did it - by toggling a digital pin at a fixed frequency, and feeding this signal to a speaker.
Take a look in the datasheet about the timer/compare features of your chip.
If you use Pulse Width Modulation (PWM) you can low-pass-filter the signal and generate an analog signal. Check for available application notes, and keep your eyes open for funny features when reading the datasheet.
funny features?
Nice little features that can be used to solve unexpected problems.
Anything the processor can do automatically represents a possibility that it may later be used in unconventional ways.
For example the link Andy posted a couple of months ago (or if it was on 8052.COM) about using an AVR chip to create a video demo and using an SPI controller to overlay high-resolution text on the video signal.
Hello Guy's!
heres' a good site for 8051 beginners' and professsional's alike, its' more like a projekt tutorial with interfacing example's and excellent code snippets'.
look at example 5, becauze it has a great methods of creating instrument real polyfonic sounds with two times of the 8051.
i think you can all learn lots' from this well structurred information.
Arun
"Hello Guy's!"
off-topic, OK, but here's a few quick tips on the proper use of apostrophes:
1. Apostrophes are not used for plurals:
Guys - not Guy's beginners - not beginners' professsionals - not professsional's examples - not example's snippets - not snippets'
Note that "lots" is a word in its own right (not a plural), so it has no apostrophe anyway.
2. The possesive form of "it" is "its" - no apostrophe; "it's" is short for "it is", etc.
Where?
You forgot to give the URL!
im' sorry to all of you becauze i forgot the link becauze i was to qwik.
iv'e got lot's of links' and heres' the best;
www.freewebs.com/.../index.html
we can all learn lots' from proffesssionals' like this guy.
I guess the crash course in use of apostrophes did not get noticed.