History of Computer II

1958 September 12

At Texas Instruments, Jack Kilby demonstrates the world's first integrated circuit, containing five components on a piece of germanium half an inch long and thinner than a toothpick.

1959 (month unknown)

At Fairchild Semiconductor, Robert Noyce constructs an integrated circuit with components connected by aluminum lines on a silicon-oxide surface layer on a plane of silicon.

1960 (month unknown)

Digital Equipment introduces the first minicomputer, the PDP-1, for US$120,000. It is the first commercial computer equipped with a keyboard and monitor. PDP stands for Program, Data, Processor. (The minicomputer represents an important size and power step from mainframe toward personal computers.)

1963 (month unknown)

Douglas Engelbart's group at Stanford Research Institute in California studies interactive devices for displays. Of the different devices tested - pointers, joysticks, trackballs - a brown, wooden box with two rolling wheels and a red push button on top achieves the best results. Douglas Engelbart is credited with inventing the mouse pointing device for computers. (The mouse will be re-born some twenty years in the future, when personal computers become powerful enough to support graphical user interfaces.)

1964 May 1

At Dartmouth College, in Hanover, New Hampshire, the BASIC programming language runs for the first time. The language was developed by professors John Kemeny and Thomas Kurtz, BASIC is an acronym for Beginners All-purpose Symbolic Instruction Code. It is based on FORTRAN and Algol, and was developed for a General Electric 225 mainframe computer. (BASIC becomes the most popular introductory programming language for microcomputers, often stored in ROM and executing commands interactively.)

1964 (month unknown)

The American Standard Association adopts ASCII (American Standard Code for Information Interchange) as a standard code for data transfer. (This standard, defining 7-bit character codes, will be used for most personal computers in the Western world.)

History of Computer I

1947 December 23

Three scientists at Bell Telephone Laboratories, William Shockley, Walter Brattain, and John Bardeen demonstrate their new invention of the point-contact transistor amplifier. The name transistor is short for "transfer resistance". (Miniaturization of electronic circuits via the transistor is a key development making personal desktop computers small, reliable, and affordable.)

1952 January

A complaint is filed against IBM, alleging monopolistic practices in its computer business, in violation of the Sherman Act. (The government's antitrust investigations and trial against IBM will drag on for thirty years, finally being dismissed in 1982. IBM will cautiously monitor its microcomputer business practices, fearful of a repeat of government scrutiny.)

1956 January

A U.S. District Court makes a final judgement on the complaint against IBM filed in January 1952 regarding monopolistic practices. A "consent decree" is signed by IBM, placing limitations on how IBM conducts business with respect to "electronic data processing machines". (Though personal computers are twenty years in the future, this consent decree will limit IBM's success and ability to compete in the marketplace.)

1956 (month unknown)

The first transistorized computer is completed, the TX-O (Transistorized Experimental computer), at the Massachusetts Institute of Technology. (While not a microcomputer, this is is a step forward in the evolution of reducing the size of computers.)

1956 September 13

IBM introduces the IBM 350 Disk File, the first hard drive, as part of the IBM RAMAC 305 computer. The drive features fifty double-sided 24-inch diameter platters, served by one arm and one read/write head. Capacity is about 5 MB, and transfer rate is 8800 characters per second.

COMPUTER

A computer is a machine for manipulating data according to a list of instruction. It takes numerous physical forms. In the earlier time electronic computer size will be large like room. Absorbing as much power as several modern computers. Today computer can made small enough to fit in palm also wrist watch and be powered from watch battery and solar battery. Society has come to recognize personal computers and their portable equivalent, the laptop computer, as icons of the information age; they are what most people think of as "a computer". However, the most common form of computer in use today is by far the embedded computer. Embedded computers are small, simple devices that are often used to control other devices—for example; they may be found in machines ranging from fighter aircraft to industrial robots, digital cameras, and even children's toys.

A computer in a wristwatch.

The ability to store and execute programs makes computers extremely versatile and distinguishes them from calculators. The Church–Turing thesis is a mathematical statement of this versatility: Any computer with a certain minimum capability is, in principle, capable of performing the same tasks that any other computer can perform. Therefore, computers with capability and complexity ranging from that of a personal digital assistant to a supercomputer are all able to perform the same computational tasks as long as time and storage capacity are not considerations.