摘要

在日常生活中，我們經常要用到鍵盤來實現對電子裝置的控制。小到手表手機，中到電視電腦，大到各種復雜儀器，都需要通過各種按鍵來實現各種操作。本次課程設計以按鍵控制顯示為主題，以MSP430G2553單片機及其接口芯片為核心構造一個鍵盤控制顯示系統。單片機最大的特點是能單獨實現電路控制所要求的智能化控制功能。單片機控制系統能夠取代以前利用復雜電子線路和數字電路構成的控制系統，可以通過軟件來實現。數碼管4*4矩陣鍵盤按鍵號是按下任意鍵時，數碼管都會顯示其按鍵序號，通過MSP430G2553單片機的程序處理，掃描程序首先判斷按鍵發生在哪一列，然后根據所在的行附加不同的值，從而得到按鍵的序號。

關鍵詞： 單片機MSP430G2553 數碼管 鍵盤顯示

Abstract

In daily life, we often want to use the keyboard to realize the control of electronic devices. Small to watch phone, to TV in computer, big to all kinds of complex instruments, all need through all kinds of pressing buttons all kinds of operation. This course design buttons to control and display as the theme, MSP430G2553 single-chip microcomputer and its interface chip as the core structure a keyboard control and display system. The biggest characteristics is a single chip microcomputer control realization circuit can alone for the intelligent control function. Single-chip microcomputer control system can be replaced by complex before electronic circuits and digital circuit consists of the control system, by software to realize. Digital tube 4 * 4 matrix keyboard key number is press any key, digital tube will show the buttons, serial Numbers, through the MSP430G2553 microcontroller procedures, scanning program first judge where a list of key happen, then according to the line where additional different values, which get buttons serial number.

Keywords: SCM MSP430G2553 digital tube keyboard display

目錄

TOC \o "1-3" \u

1 系統方案分析 PAGEREF _Toc330646309 \h 3

1.1鍵盤的選用 PAGEREF _Toc330646310 \h 3

1.2單片機的選用 PAGEREF _Toc330646311 \h 3

1.3顯示器的選用 PAGEREF _Toc330646312 \h 4

1.4輔助功能的論證與選用 PAGEREF _Toc330646313 \h 4

2系統理論分析與計算 PAGEREF _Toc330646316 \h 5

2.1單片機主機系統電路分析 PAGEREF _Toc330646317 \h 5

2.2復位電路分析 PAGEREF _Toc330646318 \h 5

2.3矩陣式鍵盤電路分析 PAGEREF _Toc330646319 \h 5

2.4譯碼顯示電路分析 PAGEREF _Toc330646320 \h 6

3.電路與程序設計 PAGEREF _Toc330646321 \h 6

3

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