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Hardware derived its name from the fact it is hard or rigid with respect to changes, whereas software is soft because it is easy to change. Hardware is typically directed by the software to execute any command or instruction. A combination of hardware and software forms a usable computing system, although other systems exist with only hardware.
Hardware logic is primarily a differentiation of the data processing circuitry from other more generalized circuitry. For example nearly all computers include a power supply which consists of circuitry not involved in data processing but rather powering the data processing circuits.
The first computer to have multiple parallel discrete single-bit ALU circuits was the 1951 Whirlwind I, which employed sixteen such "math units" to enable it to operate on 16-bit words. In 1967, Fairchild introduced the first ALU-like device implemented as an integrated circuit, the Fairchild 3800, consisting of an eight-bit arithmetic unit ...
The OWL language, based on description logic, is an example. There is also work on mapping some version of English (or another natural language) automatically to and from logic, as well as executing the logic directly. Examples are Attempto Controlled English, and Internet Business Logic, which do not seek to control the vocabulary or syntax. A ...
Fixed-point representation uses integer hardware operations controlled by a software implementation of a specific convention about the location of the binary or decimal point, for example, 6 bits or digits from the right. The hardware to manipulate these representations is less costly than floating point, and it can be used to perform normal ...
A hardware architecture example, which is integrated as a handheld medical device for diabetes monitoring. U-boat layout, with detailed equipment hardware specification and functionality. Prior to the advent of digital computers, the electronics and other engineering disciplines used the terms system and hardware as they are still commonly used ...
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Hardware architecture, the identification of a system's physical components and their interrelationships; Hardware engineering, or computer engineering; Ware (disambiguation) Open-source hardware; Hardware store, a business which sells household hardware; Materiel, equipment or hardware, and supplies in military and commercial supply chain ...