Category Archives: Notes

Notes for A+ Exams

COMPTIA A+ STUDY GUIDE

COMPTIA A+ STUDY GUIDE The Computing Technology Industry Association (CompTIA), a non-profit trade association, was created in 1982 as the Association of Better Computer Dealers, Inc. (ABCD) by representatives of five microcomputer leaderships. Over the course of a decade, ABCD … Continue reading

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FIRMWARE

FIRMWARE In electronic systems and computing, firmware is a term often used to denote the fixed, usually rather small, programs and/or data structures that internally control various electronic devices.  firmware is typically involved with very basic low-level operations without which … Continue reading

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HOW TO CONVERT DECIMAL TO BINARY

To convert a decimal number to binary, first subtract the largest possible power of two, and keep subtracting the next largest possible power form the remainder, marking 1s in each column where this is possible and 0s where it is … Continue reading

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DSL

Digital subscriber line (DSL, originally digital subscriber loop) is a family of technologies that provide internet access by transmitting digital data over the wires of a local telephone network. In telecommunications marketing, the term DSL is widely understood to mean … Continue reading

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BLUE RAY

Blu-ray Disc (official abbreviation BD) is an optical disc storage medium designed to supersede the DVD format. The disc diameter is 120 mm and disc thickness 1.2 mm plastic optical disc, the same size as DVDs and CDs. Blu-ray Discs … Continue reading

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MOUSE

A mouse is a pointing device that functions by detecting two-dimensional motion relative to its supporting surface. The mouse‘s motion typically translates into the motion of a cursor on a display, which allows for fine control of a graphical user … Continue reading

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