Friday, November 27, 2009

Computer

Before electronic computers became commercially available, the term "computer", in use from the mid 17th century, literally meant "one who computes": a person performing mathematical calculations. Teams of people were frequently used to undertake long and often tedious calculations; the work was divided so that this could be done in parallel.
A computer is a machine that manipulates data according to a set of instructions.
A programmable device that performs mathematical calculations and logical operations, especially one that can process, store and retrieve large amounts of data very quickly.

Desktop Computer - A computer that usually consists of a central processing unit (CPU), a monitor, and a keyboard as separate units, connected by cables.

All-in-One Computer - A computer with the central processing unit (CPU) and monitor built into the same device. Examples include the Apple iMac and the HP Touchsmart.

Laptop/Notebook Computer - A lightweight, portable personal computer that can fold closed when not in use that typically weighs less than 6 lbs. and is able to fit inside a briefcase.

Netbook/Mini-notebook Computer - A smaller version of a laptop/notebook computer with a smaller screen and keyboard. Screen size is typically 10.2 inches (25.9 cm) or less. Typically they also have lower performance processors (i.e. ATOM) than laptop/notebook computers (i.e. Centrino, Core) do. Examples include Asus eeePC, Acer Inspire One, Dell Mini9, and HP Mini.

Home telephone - A telephone that is not mobile and which may only be used within your home.

Basic mobile phone - A cellular/mobile phone with voice, texting, and basic data features like ringtones and simple web browsing.

Smart phone - A higher end phone with sophisticated features which can include touchscreens, full mobile web-browsing, and an underlying high-level operating system. Examples of smart phones include BlackBerrys, the Apple iPhone, HTC devices running on Android, devices with Microsoft Windows, Nokia devices with Symbian like its N and E Series (N97, E71), and devices by Palm.

1 comment:

SJeem Ahmed said...

In modern era computer became basic need for people like teacher, professionals, students, parents, children and mostly almost every one use smart devices like Android or Windows Mobile Phone, Tablet PC etc all these digital tool made education more effective. Thanks for sharing this information here it looks so useful good Job.