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ลองมาทดสอบภาษาต่างประเทศด้วยคอมพิวเตอร์อย่างง่ายกันดีกว่า คลิ๊กเลย!
BELIEVE IT OR NOT!
English language learning is easy and fun when you combine COMPUTER and LANGUAUAE together.
CLICK HERE for FUN
ลองมาทดสอบภาษาต่างประเทศด้วยคอมพิวเตอร์อย่างง่ายกันดีกว่า คลิ๊กเลย!
History of computing hardware
Computers can be separated into software and hardware. Computing hardware is the physical machine that, under the direction of a program, stores and manipulates data. Originally, calculations were done by humans, who were called computers, as a job title. This article covers major developments in the history of computing hardware, and attempts to put them in context. For a detailed timeline of events, see the computing timeline article. The history of computing article treats methods intended for pen and paper, with or without the aid of tables. Since digital computers rely on digital storage, and tend to be limited by the size and data storage is tied to the despeed of memory, the history of computer velopment of computers.
A computer is a machine that manipulates data according to a list of instructions.
Computers take numerous physical forms. The first devices that resemble modern computers date to the mid-20th century (around 1940 - 1945), although the computer concept and various machines similar to computers existed earlier. Early electronic computers were the size of a large room, consuming as much power as several hundred modern personal computers. Modern computers are based on comparatively tiny integrated circuits and are millions to billions of times more capable while occupying a fraction of the space.
Today, simple computers may be made small enough to fit into a wristwatch and be powered from a watch battery. Personal computers in various forms are icons of the Information Age and are what most people think of as "a computer"; however, the most common form of computer in use today is the embedded computer. Embedded computers are small, simple devices that are used to control other devices — for example, they may be found in machines ranging from fighter aircraft to industrial robots, digital cameras, and children's toys.
The ability to store and execute lists of instructions called 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 given enough time and storage capacity.
