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Computer Fundamentals

What is optical fiber? Briefly describe the structure of optical fiber. What are characteristics of optical fiber?

Optical Fiber Optical fiber is a type of dielectric (insulating) material, such as glass or plastic, capable of transporting light. High-speed data can be transmitted through optical fibers by total internal reflection of light. The biggest feature of optical fiber is that it transmits light signals instead of electrical signals. Currently available optical fibers have …

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What is flowchart? What are characteristics of flowchart? What are the rules for creating flowchart?

Flowchart A flowchart is a representation of a decision sequence or algorithm. This is a series of pictures that show how to proceed in order to solve a problem. Purpose of a flowchart is to show the flow of the program. The function is to show the steps of decision sequence or algorithm in the …

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What is Information Technology? What are the contributions of Information Technology (IT)?

Information Technology Information technology is the technology of storing data or information and using the stored data. The branch of technology concerned with the dissemination, processing and storage of information, especially by means of computers. Oxford English dictionary Information technology is basically an integrated technology which has emerged as information technology after long practice in …

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What are the activities of computer virus?

Computer Virus: A computer virus is a parasitic program that infects other legitimate programs, which are sometime referred as hosts. To infect the host program, the virus modifies the host to store a copy of the virus. After infection, viruses make various damages to the system which may be low to high to critical. To …

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Describe the 5 key parts of a micro-computer.

A micro-computer is a machine built with hardware and ran by software. The 5 key parts among the various hardware and software are as follows. 1. Processor Processor is the brain of the micro computer Processors include millions of transistors. the performance increases with the number of transistors It runs the programs The processor can …

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Write down about the computer hardware devices in the organization of a micro computer.

A basic PC (Personal Computer) has a number of computer hardware elements. Most of these elements are contained in the system unit of the micro computer. The hardware devices in the organization of a micro computer are as follows. 1. Processor: Processor is the brain of the micro computer Processors include millions of transistors. the …

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