Hard disk is one of the storage devices, developed to store huge amount of data. The introduction of high capacity hard disks for micro computer system solved two serious problems related to the limited storage capacity of diskettes. First, as a business begins to use micro computers extensively, the amount of software acquired and data [...]
What is ROM? What are its functions and features
Instructions which are critical to the operation of a computer are stored permanently on Read only Memory. (ROM) chip installed by the manufacturer inside the computer. This ROM chip is also called firm ware, retains instructions in a permanently accessible nonvolatile form. When the power in the computer is turned off, the instructions stored in [...]
What are the differences between ROM and RAM
ROM (Read only memory) You can only read the data. Data can’t be written every time, to write the data we need PROM, EPROM, OR EEPROM. ROM is non volatile in nature. The data stored in ROM is permanent in nature. Size of the ROM has nothing to do with processing. RAM (Random access memory): [...]
What is RAM and what are its functions
The main memory of the computer is called as Random Access Memory (RAM). The name derives from the fact that data can be stored in and retrieved at random, from anywhere in the electronic main memory chips in approximately the same amount of time, no matter where the data is. Main memory is in an [...]
What are analog and digital computers
Digital Computer: A digital computer operates directly on decimal digits that represent either discrete data or symbols. These computers take input and give output in the form of numbers and characters. The digital computers have high storage capacity. They are capable of achieving varying degrees of accuracy in both immediate and final results. Digital computers [...]
Classification of computers based on memory size
In terms of capacity, price performance, computers can be broadly classified as follows. Main Frame Computers. Mini Computers. Micro Computers. Main Frame Computers: They are most expensive of all the computers, are very big in size and offer maximum computing power. A large number of peripherals can be attached to them. They are generally used [...]
How do you classify the various Computers
Computers can be classified into two categories on the basis of the type of data they are designed to process. Data may be obtained either as a result of counting, in which case it is called as discrete data or by using some continuous signal measuring instruments, in which case it is called continuous data. [...]
List of Various Computer Output Devices
What are various output devices? Explain The output devices are the instruments between the user and the computer system. These devices are used to output the processed data i.e. information from the CPU. The most common output devices are printers, plotters etc. There are two basic categories of computer produced output 1. Output for immediate [...]
Difference between Direct and Indirect input devices
To enable a computer read and process the data, it has to be in computer readable form. This involves a process of data conversion from human readable form into machine readable form. The data conversion stage can be avoided if data is in machine readable form. This is possible with direct input device. Direct Input [...]
What are the various Input Devices
The input devices consist of one or more physical devices through which data or program can be read in to the computer. The term input is used to describe the process of capturing or collecting raw data, at the beginning of computer based information system, in to a form that is usable by the computer [...]
