evolution and types of the computer
DESCRIPTION
Notes for ICTL Form 1. Credit to Pusat Perkembangan Kurikulum, Kementerian Pelajaran MalaysiaTRANSCRIPT
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MODULE 1
COMPUTER HARDWAREEVOLUTION AND TYPES OF THE
COMPUTER
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EVOLUTION OF THE COMPUTER
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TYPES OF COMPUTER
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Single User System
A system which is used by a single person, i.e., the entire information of the hard disk only used by only one person is called single user system.
Multi User System
A multi user system can be used by many persons, i.e., the hard disk contents can be used by many persons at the same time is called multi user system.
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DIFFERENT TYPES OF COMPUTER
1) PC (Personal Computer)
• The personal computer (PC) defines a computer designed for general use by single person.
• PCs were first known as microcomputers because they were a complete computer but build on a smaller scale than huge systems in used by most businesses.
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2) DESKTOP
• A PC that is set up in a permanent location (not portable). Most desktops offer more power, storage and versatile for less cist then their portable brethren
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3) LAPTOP
• Also called notebook.
• Laptops are portable computers that integrate the display, keyboard, a pointing devise or trackball, processor, memory and hard drive all in a battery-operated package slightly larger than an average hardcover book
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4) PALMTOP
• More commonly known as Personal Digital Assistants (PDAs).
• Palmtops are tightly integrated computers that often use flash memory instead of hard drive for storage.
• These computers usually do not have keyboards but rely on touchscreen technology for user input.
• Palmtops are typically smaller than a paperback novel, very lightweight with reasonable battery life. A slightly larger and heavier version of palmtop is the handheld computer
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5) WORKSTATION
• A desktop computer that has a more powerful processor, additional memory and enhanced capabilities for performing special group of task, such as 3D graphics or game development
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6) SERVER
• A computer that has been optimized to provide services to other computers over a network.
• Servers usually have powerful processors, large memory and hard drives.
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7) MAINFRAME
• In the early days computing, mainframes were huge computers that could fill an entire room or even a whole floor.
• The size of computers has diminished while its power has increased, the term mainframe has fallen out of use in favor of enterprise server.
• You’ll still hear the term used, particularly in large companies to describe the huge machines processing millions of transactions everyday.
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8) MINICOMPUTER
• Another term rely used nowadays.
• Minicomputers fall in between microcomputers (pcs) and mainframes (enterprise servers).
• Minicomputers are normally referred to as mid-range servers now.
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9) SUPERCOMPUTER
• This types of computer usually costs hundreds of thousands or even millions of dollar.
• Although some supercomputers are single computer systems, most are comprised of multiple high performance computers working in parallel as single system.
• The best known supercomputers are built by Cray Supercomputers
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10) WEARABLE
• The latest trend in computing is wearable computers.
• Essentially, common computer applications (email, database, multimedia, calendar/scheduler) are integrated into watches, cell phone, visors and even clothing