What is Liquid Crystal Displays(LCD)?

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COMPUTER LANGUAGES

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COMPUTER LANGUAGES Languages are a means of communication. Normally people interact with each other through a language. On the same pattern, communication with computers is carried out through a language. This language is understood both by user and the machine. Just as every language like English, Hindi has its grammatical rules; every computer language is bound by rules known as SYNTAX of that language. The user is bound by that syntax while communicating with the computer system.                                                                                     ...
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CLASSIFICATION BASED ON SIZE AND CAPABILITY

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a.                    Microcomputers (Personal Computer)  A microcomputer is the smallest general purpose processing system. The older pc started 8 bit processor with speed of 3.7MB and current pc 64 bit processor with speed  of 4.66 GB.  Examples: -      IBM PC s,  APPLE  computers Microcomputer can be classified into 2 types :            1 .   Desktops            2. Portables The difference is portables can be used while travelling whereas desktops computers cannot be carried around. The different portable computers are: - 1)         Laptop 2)         Notebooks 3)         Palmtop (hand held) 4)         Wearable ...
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Digital Electronics Basic Knowledge

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vv Logic gates: A logic circuit the outputs depends upon the inputs according to some logic rules. Types of logic gates: ð   Basic gates/Primary/Fundamental (AND, OR, NOT, BUFFER) ð   Compound gates (NAND, NOR, XOR, XNOR) vv Universal Gate: A gate that can perform all the basic logical operation is called Universal Gate. NAND, NOR gates are Universal Gate. ¯¯ Middle of 19 th century, an English mathematician George Boole developed rules for manipulations of binary variables, known as Boolean algebra.ion. vv Sign-Magnitude Representation: Digital circuit understands only two symbol 0 and 1.Thus those are used to indicate the sign of a number. Normally an additional bit is used as the sign bit and it is placed at the most significant bit (MSB) location. A 0 is used to a positive number and A 1 is used to a negative number. This kind of representation is called a Sign –Magnitude –Representation. vv Bipolar Junction transistor:  A Bipolar Junction trans...
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