Automatic general-purpose device for performing arithmetic or logical operations
A computer is a machine that can be instructed to carry out sequences of arithmetic or logical operations automatically via computer programming. Modern computers have the ability to follow generalized sets of operations, called programs. These programs enable computers to perform an extremely wide range of tasks. A “complete” computer including the hardware, the operating system (main software), and peripheral equipment required and used for “full” operation can be referred to as a computer system. This term may as well be used for a group of computers that are connected and work together, in particular a computer network or computer cluster.
Computers are used as control systems for a wide variety of industrial and consumer devices. This includes simple special purpose devices like microwave ovens and remote controls, factory devices such as industrial robots and computer-aided design, and also general
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A small specialized mechanical or electronic device; a contrivance.
Global system of connected computer networks
The Internet (portmanteau of interconnected network) is the global system of interconnected computer networks that uses the Internet protocol suite (TCP/IP) to link devices worldwide. It is a network of networks that consists of private, public, academic, business, and government networks of local to global scope, linked by a broad array of electronic, wireless, and optical networking technologies. The Internet carries a vast range of information resources and services, such as the inter-linked hypertext documents and applications of the World Wide Web (WWW), electronic mail, telephony, and file sharing.
The origins of the Internet date back to the development of packet switching and research commissioned by the United States Department of Defense in the 1960s to enable time-sharing of mainframe computers. The primary precursor network, the ARPANET, initially served
Get your tech in check with powerful or portable computers
Are you ready to upgrade to a new computer? Walmart has plenty of options from laptops to tablets to desktop models all at Every Day Low Prices. Here’s how to shop for different models.
Laptop, tablet or desktop computer
The first thing to consider when buying a new computer is whether you want a laptop, a tablet or a desktop model.
If you plan to use your computer in one location, desktops have many advantages.
- Power – You can get a more powerful computer for your money. A typical, modern-day desktop computer can provide a 500-gigabyte hard drive, a 3.4-gigahertz dual-core processor, a 24x DVD+/-RW optical drive and 1 gigabyte of installed memory, which you can upgrade to 4GB.
- Upgrade options – There are always options to upgrade. You can add a larger hard drive if your system