environmental scanning

Environmental scanning

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History of computer and different kind of computer

history of computer

"Who invented the computer?" is not a question with a simple answer. The real answer is that many inventors contributed to the history of computers and that a computer is a complex piece of machinery made up of many parts, each of which can be considered a separate invention.

The first computers were people! That is, electronic computers (and the earlier mechanical computers) were given this name because they performed the work that had previously been assigned to people. "Computer" was originally a job title: it was used to describe those human beings (predominantly women) whose job it was to perform the repetitive calculations required to compute such things as navigational tables, tide charts, and planetary positions for astronomical almanacs. Imagine you had a job where hour after hour, day after day, you were to do nothing but compute multiplications. Boredom would quickly set in, leading to carelessness, leading to mistakes. And even on your best days you wouldn't be producing answers very fast. Therefore, inventors have been searching for hundreds of years for a way to mechanize (that is, find a mechanism that can perform) this task.

Different kinds of computer

The earliest  fully electronic computer was built by the US Navy during the Second World War under the supervision of Grace Hopper.  It was she who coined the phrase “bug” for a program error, when a moth shorted out a couple of wires.  It was she who invented the first computing language, ATP, and she verified the language COBOL which was widely used in industry.  She was at the forefront of computer development.  As an officer of the Naval Reserve, she achieved the rank of Admiral.

types of computer

• · Desktop computers
• · Workstations
• · Notebook computers
• · Tablet computers
• · Handheld computers
• · Smart phones
• · Supercomputers
• · Mainframe computers
• · Minicomputers