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1.1.1 development of computer hardware
Four generations of change 1. computer
The world's first general-purpose computer "ENIAC" (Electronic Numerical Integrator And Computer) in on February 14, 1946 the birth of the University of Pennsylvania . American inventor Mo Keli (JohnW.Mauchly) and Eckert (J.PresperEckert).
2. Computer replacement element
1) Moore's Law . Moore's Law is one of the (Intel) Intel founder Gordon Moore (Gordon Moore) put forward. Which reads: When the price unchanged, the number of components on an integrated circuit that can be accommodated, and about every 18 to 24 months will be doubled, the performance will also be doubled . In other words, every dollar can buy computer performance will double every 18-24 months or more. This law reveals the speed of advances in information technology. Although this trend has been going on for more than half a century, Moore's Law is still to be considered as observed or inferred, rather than a physical or natural law.
2) development of a semiconductor memory . Fairchild Semiconductor in 1970 to produce the first large-capacity semiconductor memory, so far, the semiconductor memory has experienced 11 generations; single-chip 1KB, 4KB, 16KB, 64KB, 256KB, 1MB, 4MB, 16MB, 64MB, 256MB, 1GB .
3) the development of the microprocessor . Microprocessor digits: 8-> 16-> 32-> 62, where 32, 64 refers to a machine word, refers to a computer-digit integer arithmetic can be processed by binary data.
