Interfacing AVR to LED, Tact switch+7-segment, Matrix Keypad, HD44780 Character LCD and LED dot matrix. Compiler: CodeVisionAVR. Proteus simulation included.
The PCF8578 is a low power CMOS1 LCD row and column driver, designed to drive dotmatrix graphic displays at multiplex rates of 1:8, 1:16, 1:24 or 1:32. The device has40 outputs, of which 24 are programmable and configurable for the following ratios ofrows/columns: 32¤8, 24¤16, 16¤24 or 8¤32. The PCF8578 can function as a stand-alone LCDcontroller and driver for use in small systems. For larger systems it can be used inconjunction with up to 32 PCF8579s for which it has been optimized. Together these twodevices form a general purpose LCD dot matrix driver chip set, capable of driving displaysof up to 40960 dots. The PCF8578 is compatible with most microcontrollers andcommunicates via a two-line bidirectional bus (I2C-bus). Communication overhead isminimized by a display RAM with auto-incremented addressing and display bankswitching.
There are many manufacturers of dot matrix LCD modules. However, most of these displaysare similar. They all have on-board controllers and drivers capable of displaying alpha numericsand a wide variety of other symbols (including Japanese "Katakana" characters). The internaloperation of LCD controller devices is determined by signals sent from a central processing unit(in this case, a CoolRunner-II CPLD).
unix或linux下的DNA分析軟件源碼
其功能如下
1. Edit up to 256 peptide or DNA sequences simultaneously.
2. Translates DNA->protein click next to display next frame.
3. Dot matrix plot of any 2 sequences.
4. Rudimentary amino acid statistics (MW and amino acid percentage)
5. Saves matrix plot as PBM image format.
6. Sequence reversal.
7. Creates alignment file for highlight (below).
8. Tab key toggles editing of next sequence.
I wrote this code early this year using ColdFire MCF5213 in codewarrior IDE. The LCD is STN B/W 320x240 dot matrix LCD. The code include 3 different fonts, and basic LCD driver. All original!
The "1818" is my first search word in this website, So I upload Lcd drive(Ssd1818a) C language code as my support.
96*64 dot matrix Graphic
LCD controller: SSD1818A
Parallel interface
Initial routine code
Command write and Data write
Base functions and application code
Ascii font library
Product Photo
Mcu: Pic16F887...etc.
Keywords: Ssd1818a, dot matrix graphic, Parallel interface, Initial routine, base font8x8 librarys
This module provides an interface to an alphanumeric display module.
The current version of this driver supports any alphanumeric LCD module based on the:Hitachi HD44780 DOT MATRIX LCD controller.
THIS DOCUMENT IS PROVIDED TO THE USER AS IS . Etc.etc.
Data from HITACHI LIQUID CRYSTAL CHARACTER DISPLAY MODULE and OPTREX DOT MATRIX LCD MODULE databooks
LED 線陣顯示裝置, 分為 LED 線性旋轉(zhuǎn)顯示主機和圖文錄入器兩部分。主機用直流電機帶動由紅綠 LED 組成的線陣旋轉(zhuǎn), 同時線陣按照時序依次切換顯示狀態(tài), 在固定區(qū)域利用視覺暫留效果形成 16×16 點陣, 用以顯示圖文;圖文錄入器用 HMI 觸控屏作為人機交互界面, 實現(xiàn)圖文錄入和回放功能。主機與圖文錄入器通過無線通信方式進(jìn)行信息交互,可由圖文錄入器控制主機切換不同工作任務(wù), 以及改變線陣顯示內(nèi)容。The LED linear array display device is divided into two parts:the one is the main unit used to display content,and the other one is used to input the contents.The main unit is driven by a DC motor to rotate the linear array composed by red and green light emitting diodes.At the same time,the 16×16 dot matrix that switching the display state according to the time sequence on the main unit displays pictures and texts in the fixed area,by using the visual temporary effect.The HMI touch screen is used as human machine interface to realize the function that input and playback pictures and texts.The two parts of the device communicate with each other through wireless communication.The image and text input controller can control the main unit to switch different tasks and change the content of linear array displayed.
