Download Software Topsis Fuzzy here. Why did you choose AT89C51? Do you have a programmer to program it?

I don't think so, so better to start with microcontroller (also based on 8051-core) which can be programmed through their serial port, without external devices. You can choose one like that from, for example,. Other thing is to select proper A/D converter. Again, you can do it at Maxim, or other places. It looks like for your purpose you don't need anything above 12-bit, and probably 10-bit A/D converter would be sufficient. After you decide what exactly you would like to measure you can start selecting proper sensors, so let us leave it for a while. As far as software is concerned, I would encourage you to start with assembly.

This approach will give you full in-depth understanding on how a microprocessor works and how to control its internal/external memory, registers, inputs and outputs. There are plenty of links on the 8051 assembly (search this forum first), including thousands of examples, and I am pretty sure many of EDA members will give you plenty of valuable advices.

Best Answer: The Atmel AT89C51 datasheet (2nd link below) talks about the programming method. The first link below provides a schematic and software. However, it requires you to. Have another processor and a way to load the code into that one. So it's a chicken and egg problem of sorts. They do suggest getting an SPI programmable device as the 2nd one and programming that one more easily. Since I have lots of tools for other micros floating about, I'd use one of them and wire up my own thing and write my own code if I wanted to do this myself without buying something.

How To Load Program For At89c51. Microcontroller and appropriate shunt capacitors are brought into load to correct the. Control device interface IC.

Do take note that both +5V and +12V are required. Also take note that Atmel doesn't recommend that part for anything new, either. Which gets back to the main suggestion about buying a board. But that also says 'why bother, since the chip isn't recommended anymore and may disappear -- it would be a waste of money to buy a programmer for it.' So, that gets back to why you don't just throw away the chip entirely and get a newer Atmel unit that is supported or else, if you are stuck on 8051 cores, something from Cygnal -- no, that's SiLabs now. The 3rd link provides almost all you need to do it from a PC.

It is from Atmel's site. It's another option for you. • Tell us some more • Upload in Progress • Upload failed. Please upload a file larger than 100x100 pixels • We are experiencing some problems, please try again. • You can only upload files of type PNG, JPG, or JPEG. • You can only upload files of type 3GP, 3GPP, MP4, MOV, AVI, MPG, MPEG, or RM.

• You can only upload photos smaller than 5 MB. • You can only upload videos smaller than 600MB. • You can only upload a photo (png, jpg, jpeg) or a video (3gp, 3gpp, mp4, mov, avi, mpg, mpeg, rm). • You can only upload a photo or a video. • Video should be smaller than 600mb/5 minutes • Photo should be smaller than 5mb •.