LED點(diǎn)陣顯示器作為一種新興的顯示器件,是由多個(gè)獨(dú)立的LED發(fā)光二極管封裝而成。
本文介紹了基于單片機(jī)(89C51) 的一種8×8 LED 漢字顯示屏的設(shè)計(jì)與制作過程,內(nèi)容包括 LED 漢字顯示屏的硬件電路、PCB 設(shè)計(jì)、程序設(shè)計(jì)與調(diào)試等方面,涉及到單片機(jī)電子產(chǎn)品設(shè)計(jì)與制造過程中的各個(gè)環(huán)節(jié)。
以8×8LED點(diǎn)陣顯示器,單片機(jī)89C51作控制器,探討簡單的漢字、英文字母和動(dòng)態(tài)圖象顯示技術(shù)。
為闡明用單片機(jī)控制雙色顯示屏的方法,對LED顯示模塊單元如何進(jìn)行信號控制及信號傳輸中的驅(qū)動(dòng)問題進(jìn)行了研究。
討論了單片機(jī)控制系統(tǒng)中關(guān)鍵的數(shù)據(jù)發(fā)送問題,結(jié)果表明采用并行數(shù)據(jù)輸入、串行數(shù)據(jù)及同步時(shí)鐘輸出的專用電路可大大減少CPU 的輔助時(shí)間,提高數(shù)據(jù)的發(fā)送速度。
關(guān)鍵詞:LED、驅(qū)動(dòng)電路、單片機(jī)
Abstract
LED dot matrix display as a new display is LED by a number of independent light-emitting diode package from.
In this paper, Introduced a simple 8 × 8 LED display based on single-chip microcomputer (89C51) of Chinese characters design and production process, including character LED display hardware, PCB design, programming and debugging, etc., related to a single machine design and manufacture of electronic products in all aspects of the process.
Use 8 × 8LED dot displays, for single-chip controller 89C51 explore simple Chinese characters, English letters and the dynamic image display technology.
To clarify the use of single-chip dual-color display control method, LED display module unit how to signal control and signal transmission in the study of driver issues.
Discussion of the single-chip control system to send the issue of critical data, results show that the parallel data input, serial output data and clock synchronization circuits dedicated to significantly reduce the CPU support time and increase the speed of data sent.