Author: Edutech

SECONDARY MEMORY- HDD, FLOPPY DISK, CD & DVD

Features of Secondary Memory Types of Secondary Memory Hard Disk Floppy Disk Since most programs were larger, that required multiple floppy diskettes to store large amounts of data. Therefore, it is not used due to very low memory storage CD (Compact Disc) Types of CDs Blu Ray Disc (BD) Pen Drive Cache Memory Advantages of […]

Resistor

Ohm’s Law Tolerance of a Resistor Tolerance = value of resistor x value of tolerance band  Gold = ± 5% Silver = ± 10 % None = ± 20% Types of Resistor And then And then Surface Mount Device The size of SMD resistors is indicated by a numerical code, such as 0603. This code contains the […]

COMPUTER VIRUS

Symptoms of a Computer Virus There are many signs or symptoms which show that a computer is infected with a virus, some of which are as follows: How Virus Can be Infected? Types of Computer Virus Overwrite Virus: Append Virus: Macro Virus : Boot Virus : Resident Virus : * Resident viruses keep themselves in […]

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