Digital Electronics Basic Knowledge
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...