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The first production IBM hard disk drive, the 350 disk storage, shipped in 1957 as a component of the IBM 305 RAMAC system. It was approximately the size of two large refrigerators and stored five million six-bit characters (3.75 megabytes)[18] on a stack of 52 disks (100 surfaces used).[27] The 350 had a single arm with two read/write heads ...
An Intel mSATA SSD Samsung M.2 NVMe SSD A solid-state drive (SSD) is a solid-state storage device. It provides persistent data storage using no moving parts. It is sometimes called semiconductor storage device or solid-state device; it is also called solid-state disk because it is frequently interfaced to a host system as a hard disk drive.
- Von Neumann Architecture
- Types of Computer Systems
- Hardware Upgrade
- Recycling
- External Links
The template for all modern computers is the Von Neumann architecture, detailed in a 1945 paper by Hungarian mathematician John von Neumann. The paper describes a design architecture for an electronic digital computer with subdivisions of a processing unit consisting of an arithmetic logic unit and processor registers, a control unit containing an ...
Personal computer
The personal computer is one of the most common types of computer due to its versatility and relatively low price. Desktop personal computers have a monitor, a keyboard, a mouse, and a computer case. The computer case holds the motherboard, fixed or removable disk drives for data storage, the power supply, and may contain other peripheral devices such as modemsor network interfaces. Some models of desktop computers integrated the monitor and keyboard into the same case as the processor and po...
Mainframe computer
A mainframe computeris a much larger computer that typically fills a room and may cost many hundreds or thousands of times as much as a personal computer. They are designed to perform large numbers of calculations for governments and large enterprises.
Departmental computing
In the 1960s and 1970s, more and more departments started to use cheaper and dedicated systems for specific purposes like process control and laboratory automation. A minicomputer, or colloquially mini, is a class of smaller computers that was developed in the mid-1960s and sold for much less than mainframe and mid-size computers from IBMand its direct competitors.
When using computer hardware, an upgrade means adding new or additional hardware to a computer that improves its performance, increases its capacity, or adds new features. For example, a user could perform a hardware upgrade to replace the hard drive with a faster one or a solid state drive (SSD) to get a boost in performance. The user may also ins...
Because computer parts contain hazardous materials, there is a growing movement to recycle old and outdated parts. Computer hardware contain dangerous chemicals such as lead, mercury, nickel, and cadmium. According to the EPA these e-wastes have a harmful effect on the environment unless they are disposed of properly. Making hardware requires energ...
Media related to Computer hardwareat Wikimedia CommonsLearning materials related to Computer hardwareat WikiversityProgramming tools are also software in the form of programs or applications that developers use to create, debug, maintain, or otherwise support software.[better source needed]Software is written in one or more programming languages; there are many programming languages in existence, and each has at least one implementation, each of which consists of its own set of programming tools.
Software as a service ( SaaS / sæs / [1]) is a form of cloud computing in which the provider offers the use of application software to a client and manages all the physical and software resources used by the application. [2] The distinguishing feature of SaaS compared to other software delivery models is that it separates "the possession and ...
Agile software development is the mindset for developing software that derives from values agreed upon by The Agile Alliance, a group of 17 software practitioners in 2001. As documented in their Manifesto for Agile Software Development the practitioners value:[1] Individuals and interactions over processes and tools Working software over ...
