点阵led外文翻译---基于at89c52的led概述(编辑修改稿)

点阵led外文翻译---基于at89c52的led概述(编辑修改稿)内容摘要：

light emitting diode sealed in a plastic tube in mon 5. Display horizontally scrolling, static, vertical scroll and flip shows, etc. Single block module control drive 12 (maximum control and block), 16X48 matrix 8X8 matrix (or 32X48 matrix), is a single block of MAX7219 (or PS7219, HD7279, ZLG7289 8279 and other similar LED display driver module) 12 times (or 24 times)! Can use cascade means any bitmap big screen posed. Show good effect, low consumption, and the cost of using MAX7219 circuit is lower. The LED display inspection method, See appearance, specifications, screen body flatness, screen the attachment within 2 look bad, after the light screen is not in scope, the screen (generally now basically no) Color consistency, displays text display is normal, the picture to screen, fullcolor play white, red, green and blue. Technical advantage Existing mon indoor fullcolor scheme parison: 1 the matrix modules: design, color dot matrix LCD by indoor artifacts Advantage: the cost of raw materials, production and processing of the most advantage of simple process, quality is stable. Faults: color consistency, Mosaic phenomenon, serious effect. 沈阳工程学院毕业设计（论文） 4 2. Single lamp schemes for solving the bitmap screen color: for outdoor screen technology, a scheme of pixels, outdoor multiplexing technique (also called pixel sharing technology, virtual pixels to indoor display technology) transplantation. Advantage: color consistency than bitmap module of good way. Weakness: the effect not beautiful, color mixing, horizontal Angle and have off color. Process is relatively plex, antistatic high. Actual pixel resolution do 10,000 more difficult. Features • Compatible with MCS51174。 Products • 8K Bytes of InSystem Programmable (ISP) Flash Memory • 1000 Write/Erase Cycles • Fully Static Operation: 0 Hz to 33 MHz • Threelevel Program Memory Lock • 256 x 8bit Internal RAM • 32 Programmable I/O Lines • Three 16bit Timer/Counters • Eight Interrupt Sources • Full Duplex UART Serial Channel • Lowpower Idle and Powerdown Modes • Interrupt Recovery from Powerdown Mode • Watchdog Timer • Dual Data Pointer • Poweroff Flag Description The AT89C52 is a lowpower, highperformance CMOS 8bit microcontroller with 8K bytes of insystem programmable Flash memory. The device is manufactured using Atmel’s highdensity nonvolatile memory technology and is patible with the industry standard 80C51 instruction set and pinout. The onchip Flash allows the programmemory to be reprogrammed insystem or by a conventional nonvolatile memory bining a versatile 8bit CPU with in system programmable Flash on a monolithicchip, the Atmel AT89C52 is a powerful icrocontroller which provides a highlyflexible and costeffective solution to many embedded control AT89C52 provides the following tandard features: 8K bytes of Flash, 256 bytes of RAM, 32 I/O lines, Watchdog timer, two data pointers, three 16bit timer/counters, a sixvector twolevel interrupt architecture, a full duplex serial port, onchip oscillator,and clock circuitry. In addition, the AT89C52 is designed with static logic for operation down to zero frequency and supports two software selectable power saving Idle Mode stops the CPU while allowing the RAM, timer/counters, serial port, and interrupt system to continue functioning. The Powerdown mode saves the RAM contents but freezes the oscillator, disabling all other chip functions until the next interrupt or hardware reset. 5 In the Counter function, the register is incremented in response to a 1to0 transition at its corresponding external input pin, T2. In this function, the external input is sampled during S5P2 of every machine cycle. When the samples show a h。