Search results
Results from the WOW.Com Content Network
A few years later, in 1973, WAGO introduced the box terminal for use in electrical installations, which was the first spring-loaded terminal to be certified by VDE. [6] In 1975, the English company Bowthorpe Electric acquired a majority stake in WAGO. [8] In 1977, the company developed the spring-cage terminal block under the product name Cage ...
The left R-module M is finitely generated if there exist a 1, a 2, ..., a n in M such that for any x in M, there exist r 1, r 2, ..., r n in R with x = r 1 a 1 + r 2 a 2 + ... + r n a n. The set {a 1, a 2, ..., a n} is referred to as a generating set of M in this case. A finite generating set need not be a basis, since it need not be linearly ...
Programmed input–output (also programmable input/output, programmed input/output, programmed I/O, PIO) is a method of data transmission, via input/output (I/O), between a central processing unit (CPU) and a peripheral device, [1] such as a Parallel ATA storage device.
The first use of channel I/O was with the IBM 709 [2] vacuum tube mainframe in 1957, whose Model 766 Data Synchronizer was the first channel controller. The 709's transistorized successor, the IBM 7090, [3] had two to eight 6-bit channels (the 7607) and a channel multiplexor (the 7606) which could control up to eight channels. The 7090 and 7094 ...
The prefetch buffer depth can also be thought of as the ratio between the core memory frequency and the IO frequency. In an 8n prefetch architecture (such as DDR3), the IOs will operate 8 times faster than the memory core (each memory access results in a burst of 8 datawords on the IOs). Thus, a 200 MHz memory core is combined with IOs that ...
WAGO may refer to: WAGO GmbH & Co. KG, a German manufacturing company; WAGO (FM), a radio station (88.7 FM) licensed to Snow Hill, North Carolina, United States;
M/tM is a finitely generated torsion free module, and such a module over a commutative PID is a free module of finite rank, so it is isomorphic to: for a positive integer n. Since every free module is projective module, then exists right inverse of the projection map (it suffices to lift each of the generators of M/tM into M).
The most familiar examples of this construction occur when considering vector spaces (modules over a field) and abelian groups (modules over the ring Z of integers). The construction may also be extended to cover Banach spaces and Hilbert spaces. See the article decomposition of a module for a way to write a module as a direct sum of submodules.