论文部分内容阅读
随着大规模集成电路(LSI)制造技术的飞速发展,电脑正朝着两个明显的方向(即两大分支)发展:一是微型计算机系统的性能不断提高,以满足高速度大容量的“数据处理”;二是单片微机的功能日益完善,以满足诸多领域各种错综复杂的“现场控制”。 在1975年德克萨斯仪器公司发明的世界上第一个4位单片机TMS-1000诞生后,一些大型微电子公司竞相研制开发了各种单片机系列产品。从字长方面划分,单片机有4位、8位、16位、32位四大类,其中前三类占据了单片机市场的主要份额,在这三类单片机当中,8位机又一直为主流产品。
With the rapid development of large-scale integrated circuit (LSI) manufacturing technology, the computer is moving in two obvious directions (ie, two major branches): First, the performance of the microcomputer system is continuously improved to meet the high-speed and high-capacity “ Data processing ”. Second, the function of a single-chip microcomputer has been increasingly improved to meet the intricacies of“ on-site control ”in many fields. After the birth of the world’s first 4-bit microcontroller, TMS-1000, invented by Texas Instruments in 1975, a number of large microelectronics companies competed to develop a variety of microcontroller families. Divided from the word length, the microcontroller has four, eight, 16, 32 four major categories, of which the first three occupied the main MCU market share, among these three types of microcontrollers, 8-bit machine has been the mainstream products .