Virtual memory is not only physically existing memory. It is created by operating system in the partition of hard disk. When operating system is installed for first time, the system automatically allocate some space in partition which is used as virtual memory. Virtual memory is used to ease program loading in RAM by creating more…

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Cache memory is a small size memory placed inside the processor. The main function of cache memory is to reduce the access time of loading previously run program. Once run programs are temporarily stored in cache memory so that when it is run again, the access (loading) time decreases. Cache memory is of 2 types;…

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Flash memory is a small chip memory which is a type of EEPROM. It can store data in the form of video, images and other format. The stored data can be read and deleted to store new one. The deletion of data is carried by high speed current of device. Hard Disk Fig. Structure of…

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ROM is a small size primary memory used in computer system. The data or information stored in ROM can be used (read) as many times as required but the stored content cannot be modified. ROM also needs power backup to hold data or information settings. BIOS is a small size memory used as ROM in…

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RAM (Random Access Memory): RAM is an essential memory used in computer system which helps during booting of computer system. So it is known as primary or main memory. The data or information stored in RAM is temporary time period, when computer is powered ON, data or information start to load in RAM but data…

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Memory is a unit place where data or information is stored for some time period. Some memory can store data for temporary period while others can store for permanent time period. Similarly some memory require power backup to hold data while others do not require power backup. Small size to large size data holding memories…

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Generation of computer shows or describes different type of computers invented or manufactured using different technologies. Similarly, generation also describes shape, size and capacity of computer changed during different time frame. 1] First Generation (1940-1956): Vaccum Tubes Characteristics: – The first generation computers were based on vaccum tubes. – The first generation computers were very…

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The computer types can be classified according to the signal usage, size and speed. According to signal used by computers computers are two types:- 1] Analog  Computer:- An analog computer is that which uses analog signal as input, It uses an infinite number of voltage or current values. Characteristics of a analog computer are:- –…

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a] Education:- Computer can be used in education to help students in their study and teachers to organize and prepare their teaching materials. They can also collect required information form the internet in absence of physical notes and books. Teachers and students can use internet for e-books, notes and tutorials. Computers can be used for…

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a] Speed:- Computer can perform the given tasks in a fraction of second ie. nanosecond to picosecond. The processing speed of a computer is measured in Hertz (Hz). The unit of measurement are KHz, MHz, GHz and THz. Computers speed is based on processor time period. Speed is the basic character of a computer which…

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