In 1981, International Business Machines (IBM), the largest computer company in the world, introduced its own microcomputer, dubbed the IBM PC (“PC” is the abbreviation for personal computer).
晶体管的三位发明人 ——因这项伟大发明，三人获得1956年诺贝尔物理学奖
威廉·肖克利
约翰·巴丁
沃尔特·布拉坦
In the early 1970s, technology progressed to the point where the circuits for the “brain” of a computer (the central processing unit or CPU) could be manufactured on a single semiconductor chip. These miniaturized computers were called microprocessors, and were manufactured by corporations such as Intel and Motorola.
Now , there is a light-weight, Tablet computer, designed to be moved easily. Now is the most popular ipad is the55 年，贝尔实验室使用 800 只晶 体管 组装 了世界 上第一台晶体管计算机 TRADIC。 (Transistor Digital Computer)
The semiconductor chips enabled engineerd to miniaturize the circuits in all electronic devices. Most importantly, it priduced a new generation of mainframes and minicomputers with increased capability, greater speed , and smaller size.
In the late 1960s and early 1970s, engineers made great strides in reducing the size of electronic components. They developed the semiconductor chip, which was about the size of a fingenail and could contain hundreds of transistors.
ENIAC两位设计者 ——莫契利和埃克特
By the early 1970s, they were in common use in large businesses, government, and the military. The largest computers (like the ENIAC= the Electronic Numerical Integrator and Computer) were called mainframes!
The fitst microcomputers
In 1971, Intel company claims, they created a "open integrated circuit new era" semiconductor chip, that is the first piece of microprocessor chip 4004. The so-called microprocessor chip is a CPU (Central Processing Unit, the CPU) integration on a single chip.
2016156王健欣 2016157马海超 2016158崔昌胜
In 1946 Pennsylvania University in the USA developed the first electronic computer in the world through several years" hard efforts."
This is easy to carry around and preferred by srudents people to meet their assignments and other necessary tasks.
The approach of this computer is also the same as the personal computer. It can store the same amount of data and having a memory of the same size as that of a personal computer. One can say that it is the replacement of personal desktop computer.
This computer is small in size and you can easily arrange it to fit in your dingle bedroom with its all accommodation.Today this is thought to be the most popular computer in all.
The First IBM PC
Almost all the computer users ate familiar with the personal computers. This is the computer mostly preferred by the home users.These computers are lesser in cost than the computers given abmve and also, small in size; they are also called PCs in short for personal computers.