It can refer to all computer instructions in general or to any specific set of computer instructions. It is inclusive of both machine instructions and source code (more human-understandable instructions that must be rendered into machine code by compilers or interpreters before being executed). On most computer platforms‚ software can be grouped into a few broad categories: software is the basic software needed for a computer to operate. software refers to one or more computer programs and data
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1. Introduction to Network Devices All networks are made up of basic hardware building blocks to interconnect network nodes‚ such as Network Interface Cards (NICs)‚ Bridges‚ Hubs‚ Switches‚ and Routers. In addition‚ some method of connecting these building blocks is required‚ usually in the form of galvanic cable (most commonly Category 5 cable). Less common are microwave links (as in IEEE 802.12) or optical cable ("optical fiber"). An ethernet card may also be required. Network interface cards
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Types of Storage Devices Physical components or materials on which data is stored are called storage media. Hardware components that read/write to storage media are called storage devices. Two main categories of storage technology used today are magnetic storage and optical storage. Primary magnetic storage o Diskettes o Hard disks (both fixed and removable) o High capacity floppy disks o Disk cartridges o Magnetic tape Primary optical storage o Compact Disk Read Only Memory (CD ROM)
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and telecommunications AREAS AND USES OF COMPUTER: * EDUCATION Computers are used in schools for teaching Computers are used for mathematical calculation Students can do their work by using computer * BANK Computers are used in banks for storing information about different account holders. Computers help in keeping a record of the cash. Computers help in giving all kinds of information regarding any account in the bank * ENTERTAINMENT Computers are used for playing games‚ listening to
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A computer is not an acronym and is sometimes abbreviated as comp or ’puter. The term "computer" was originally given to humans who performed numerical calculations using mechanical calculators such as the abacus and slide rule. The term was later given to a mechanical device as they began replacing the human computers. Today’s computers are electronic devices that accept data (input)‚ process that data‚ produces output‚ and then store (storage) the results. The first computer was called the ENIAC
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EMOTIONAL ADJUSTMENT OF THE PHYSICALLY HANDICAPPED CHILD Sometimes babies are not born healthy or normal. Some parents will have a baby who has a birth defect‚ who is developmentally delayed or a baby who is born with special needs. Before your baby is born‚ you may or may not know that your baby will have special needs. When parents learn that their child has a disability‚ they begin a journey that takes them into a life that is often filled with strong emotions and difficult choices‚ and they
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Before computers there were not telephone answering machines‚ handheld calculators‚ fax machines‚ personal computers. People did what they had to do without these things. People wrote letter by hand or with a typewriter‚ they also kept track of data and numbers in ledgers. They were not texting each other‚ there was either in person or over the phone. . Computers are integral to our daily lives and there are millions used daily. Computers are used at home‚ work‚ and school. They are also embedded
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OUTPUT DEVICE What are OUTPUT DEVICES? Output devices are hardware devices that display or present information to the user or other people. The monitor‚ printer and the speaker are one of the examples. PRINTER It is a computer device that produces a permanent copy on paper of information from the computer. There are several kinds of printers: ink jet‚ dot-matrix and laser jet printers. DOT MATRIX PRINTER Prints by hammering or striking an ink-soaked cloth ribbon against a paper. The advantage
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Proceedings of IFIP 17th World Computer Congress‚ Montreal‚ Canada‚ 25-30 August 2002‚ p133-148. Kluwer Academic Publishers. User requirements analysis A review of supporting methods Martin Maguire Research School in Ergonomics and Human Factors Loughborough University‚ UK m.c.maguire@lboro.ac.uk Nigel Bevan Serco Usability Services‚ UK nbevan@usability.serco.com Abstract: Understanding user requirements is an integral part of information systems design and is critical to the success
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Video 1.06 Storage Devices Hard Drives Hard drives are comprised of platters Read/Write heads for each platter Read and write on top and bottom of platter Never exposed to magnets Data loss may occur 137 GB Limit Hard Drive size limited to 137GB Not a physical limit Limited by address the system can support 28 bit communications limited to 268‚435‚555 addresses equates to 137 GB Flash BIOS to upgrade hard drive interfaces PATA‚ SATA‚ SCSI‚ USB‚ and FireWire most common is the
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