A laptop is any computer designed to do pretty much anything a desktop system
can do but run for a short time (usually two to five hours) on batteries. They
are designed to be carried around but are not particularly convenient to carry
around. They are significantly more expensive than desktop systems and have far
worse battery life than PDAs. Calling a system a laptop implies nothing about
its platform. By far the fastest laptops are the PowerPC based Macintoshes.
Computer memory is used to temporarily store data. In reality, computer memory
is only capable of remembering sequences of zeros and ones, but by utilizing the
binary number system it is possible to produce arbitrary rational numbers and
through clever formatting all manner of representations of pictures, sounds, and
animations. The most common types of memory are RAM, ROM, and flash.
A modem allows two computers to communicate over ordinary phone lines. It
derives its name from modulate / demodulate, the process by which it converts
digital computer data back and forth for use with an analog phone line.
The screen for viewing computer information is called a monitor.
In computer parlance a mouse can be both the physical object moved around to
control a pointer on the screen, and the pointer itself. Unlike the animal, the
proper plural of computer mouse is "mouses".
This originally indicated a capability to work with and integrate various types
of things including audio, still graphics, and especially video. Now it is more
of a marketing term and has little real meaning. Historically the Amiga was the
first multimedia machine. Today in addition to AmigaOS, IRIX and Solaris are
popular choices for high-end multimedia work.
The term network computer refers to any (usually desktop) computer system that
is designed to work as part of a network rather than as a stand-alone machine.
This saves money on hardware, software, and maintenance by taking advantage of
facilities already available on the network. The term "Internet appliance" is
often used interchangeably with NC.
A network (as applied to computers) typically means a group of computers working
together. It can also refer to the physical wire etc. connecting the computers.
A notebook is a small laptop with similar price, performance, and battery life.
An organizer is a tiny computer used primarily to store names, addresses, phone
numbers, and date book information. They usually have some ability to exchange
information with desktop systems. They boast even better battery life than PDAs
but are far less capable. They are extremely inexpensive but are typically
incapable of running any special purpose applications and are thus of limited
The operating system is the program that manages a computer's resources. Common
OSes include Windows '95, MacOS, Linux, Solaris, AmigaOS, AIX, Windows NT, etc.
The term personal computer properly refers to any desktop, laptop, or notebook
computer system. Its use is inconsistent, though, and some use it to
specifically refer to x86 based systems running MS-DOS, MS-Windows, GEOS, or
OS/2. This latter use is similar to what is meant by a WinTel system.
Roughly speaking, a platform represents a computer's family. It is defined by
both the processor type on the hardware side and the OS type on the software
side. Computers belonging to different platforms cannot typically run each
other's programs (unless the programs are written in a language like Java).
If something is portable it can be easily moved from one type of computer to
another. The verb "to port" indicates the moving itself.
A printer is a piece of hardware that will print computer information onto
The processor (also called central processing unit, or CPU) is the part of the
computer that actually works with the data and runs the programs. There are two
main processor types in common usage today: CISC and RISC. Some computers have
more than one processor and are thus called "multiprocessor". This is distinct
from multitasking. Advertisers often use megahertz numbers as a means of showing
a processor's speed. This is often extremely misleading; megahertz numbers are
more or less meaningless when compared across different types of processors.
A program is a series of instructions for a computer, telling it what to do or
how to behave. The terms "application" and "app" mean almost the same thing
(albeit applications generally have GUIs). It is however different from an
applet. Program is also the verb that means to create a program, and a
programmer is one who programs.
Running a program is how it is made to do something. The term "execute" means
the same thing.
The non-physical portion of the computer; the part that exists only as data; the
programs. Another term meaning much the same is "code".
An program used to perform various calculations. It is especially popular for
financial applications. Some common spreadsheets include Lotus 123, Excel,
OpenOffice Spreadsheet, Octave, Gnumeric, AppleWorks Spreadsheet, Oleo, and
The operator of a computer.
A program designed to help with the production of textual documents, like
letters and memos. Heavier duty work can be done with a desktop publisher. Some
common word processors include MS-Word, OpenOffice Write, WordPerfect, AbiWord,
AppleWorks Write, and GeoWrite.
The World-Wide-Web refers more or less to all the publically accessable
documents on the Internet. It is used quite loosely, and sometimes indicates
only HTML files and sometimes FTP and Gopher files, too. It is also sometimes
just referred to as "the web
Computer Awareness Quiz Questions for IBPS Bank Clerk Exams