Category: Computer organization

PCI Bus

Here, PCI stands for Peripheral Component Interconnect. The PCI bus was developed by Intel and became widespread around 1994. It was used to add expansion cards such as extra serial or USB ports, network interfaces, sound cards, modems, disk controllers, or video cards. Many devices that formerly required an expansion card can now be connected […]

Cache Mapping

A cache mapping process refers to the process of moving data from main memory to cache memory. Cache hit If there is a cache hit, word is fetched from cache memory to the CPU. Cache miss If there is a cache miss, word is searched in the memory, than its copied from main memory to […]

Principle of Cache Memory

Locality of reference, also known as the principle of locality, is the tendency of a processor to access the same set of memory locations repetitively over a short period of time. The computer program’s tendency to access instructions whose addresses are close together is referred to as locality of reference. Two type of locality Temporal […]

Cache Memory

What is Cache memory ? Cache memory is an extremely fast memory used in computers to compensate for the performance difference between main memory access time and processor logic. Cache memory is placed between the CPU and the main memory. The cache memory access time is 5 to 10 times faster than the main memory […]

Register Transfer Language

The symbolic notation used to describe the micro operation transfers among register is called a register transfer language.A register transfer language is a system for expressing in symbolic form the micro operation sequences among the register of a digital module. For example, R1 ← R2 This statement denotes a transfer of the content of register […]

Addressing modes

Addressing modes are the ways through which operands are specified.   The address field in a typical instruction formats are relatively small. This address field is used to reference the operand in the memory. Different addressing modes are: Immediate addressing mode Direct addressing mode Indirect addresing mode Register direct addressing mode Register indirect addressing mode Displacement […]

Register Organization

Registers are temporary storage locations inside the CPU. A register is a very very fast memory that is built into the CPU. Registers are used to store data temporarily.. Different processors have different register. Registers are normally measured by the number of bits they can hold, for example, an 8-bit register means it can store […]

Logic Gates

Logic gate: Block of hardware’s, on getting input they produce output 0 or 1. Input for logic gates are either 0 or 1. Output for logic gates are either 0 or 1. Each logic gate has its symbol. Operations of logic gate are represented by algebraic expressions. Names of logic gates: AND logic gate OR […]

Structure of Desktop computers

Computer consists of a set of hardwares and softwares. A computer system can be viewed as a  combination of input, processing and output  subsystems.Input –> Process –> OutputHardware examples: Keyboard Monitor Mouse, etc. Software examples: Operating system Computer games Antivirus, etc. Case The computer case comtains most of the computer components.  Power supply A power […]

Net 31

CBSE NET July 2016 PAPER II Q. In a Positive edge triggered JK flip-flop, if J and K both are high then the output will be _______ on the rising edge of the clock. (A) No change (B) Set (C) Reset (D) Toggle Ans :- (D) Explanation:- State table of JK Flip Flop – J […]