The perfect combination of Proteus and Keil-EEWORLD

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Generally speaking, it is difficult to learn MCU well without a MCU development board, and I am also a person who has experienced this.

Later I found a very useful software called proteus. I tried it for a few times and it really works. If you don't believe me, try it!

Use it to realize the simulation experiment of single chip microcomputer driving LCD1602:

I won't introduce the usage of proteus in detail here, but I think many people know how to download it.

Before starting, you need to prepare the simulation file. This is the HEX file generated by Keil (what is HEX? I don't know)

Now we are using LCD1602.HEX (this is a HEX file generated by a program I wrote myself, I will post it together)

Running Proteus 6 Professional (ISIS6 Professional)

Does it feel similar to Protel? If you feel this way, then it is correct.

In fact, it is also a software for drawing principles and making PCBs.

Next is to select components

The first thing to choose is the microcontroller (nonsense!)

Click P in the picture above, you can select it, enter AT89C51 in the dialog box and it will be OK

The same method was used to select LM016L

See if there are more of the following

Okay, in this step, we will put these two components into the schematic diagram. I won’t go into details about how to put them. Just figure it out by yourself (please don’t scold me)

It's almost the same as below.

The connection in the figure above is the connection between the P2 port of 51 and the data port of LCD1602, RS is connected to P1.4, RW is connected to P1.3, EN is connected to P1.2

So far, HEX files have not been used.

Don't worry, let's talk about HEX now. This is the soul of the simulation. First right-click 51, then left-click it, and you can see the following picture.

Click in Program File to bring up the file browsing dialog box, find the LCD1602.hex file, click OK to complete adding the file, change the frequency to 12MHz in Clock Frequency, and click OK to exit.

Okay, let's start admiring your masterpiece.

Click Start Simulation.

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