Funny novelty shirt, great gift for geeky or nerdy men, women, boys, girls. Features retro pixelated green text, familiar to computer programmers, technicians, repair tech, computer science students and teachers, software and hardware repair technicians. This Error 404 Xmas Sweater Not Found Ugly LS shirt is the perfect gift for any computer programmer, IT Worker C, C++, C Sharp, php, javascript, css. Buy it for your brother, sister, best friend, boyfriend or girlfriend, cousin, uncle, aunt, husband, wife. A computer is a device that can be instructed to carry out an arbitrary set of arithmetic or logical operations automatically. The ability of computers to follow generalized sequences of operations, called programs, enable them to perform a wide range of tasks. Such computers are used as control systems for a very 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 assisted design, but also in general purpose devices like personal computers and mobile devices such as smartphones. The Internet is run on computers and it connects millions of other computers. Since ancient times, simple manual devices aided people in doing calculations. Early in the Industrial Revolution, some mechanical devices were built to automate long tedious tasks, such as guiding patterns for looms. More sophisticated electrical machines did specialized analog calculations in the early 20th century. The first digital electronic calculating machines were developed during World War II. The speed, power, and versatility of computers has increased continuously and dramatically since then. Conventionally, a modern computer consists of at least one processing element, typically a central processing unit (CPU), and some form of memory. The processing element carries out arithmetic and logical operations, and a sequencing and control unit can change the order.
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