Telephone exchange — A telephone operator manually connecting calls with cord pairs at a telephone switchboard. In the field of telecommunications, a telephone exchange or telephone switch is a system of electronic components that connects telephone calls. A central… … Wikipedia
pH — For other uses, see PH (disambiguation). Acids and Bases Acid dissociation constant Acid base extraction Acid–base reaction Acid–base titration Dissociation c … Wikipedia
Apple IIe — Mac specs| ProDOS|RAM=64 KB (up to 1 MB+)|RAMtype=| Discontinued=November 1993The Apple IIe is the third model in the Apple II series of personal computers produced by Apple Computer. The e in the name stands for enhanced , referring to the fact… … Wikipedia
Vacuum tube — This article is about the electronic device. For experiments in an evacuated pipe, see free fall. For the transport system, see pneumatic tube. Modern vacuum tubes, mostly miniature style In electronics, a vacuum tube, electron tube (in North… … Wikipedia
Power strip — Power bar redirects here. For the manufacturer of energy food products, see PowerBar. French/Belgian power strip A power strip (also known as an extension block, power board and by many other variations) is a block of electrical sockets that… … Wikipedia
Miller Reese Hutchison — Born August 6, 1876(1876 08 06) Montrose, Alabama Died February 16, 1944 ( … Wikipedia
TRS-80 Color Computer — 16k TRS 80 Color Computer 1 Developer Tandy Corporation Manufacturer Motorola Release date 1980 … Wikipedia
Chisel — This article is about the tool. For the American band, see Chisel (band). For the album by Australian band Cold Chisel, see Chisel (album). Steel woodworking chisel … Wikipedia
Washing machine — This article is about the laundry cleaning apparatus. For the Sonic Youth album, see Washing Machine (album). A typical modern front loading washing machine Irreler Bauerntradition shows an early Miele was … Wikipedia
IBM RPG — Infobox programming language name = RPG Report Program Generator paradigm = Multi paradigm year = 1959 designer = developer = IBM latest release version = RPG IV version 6 release 1 latest release date = release date|2008|1|29 latest test version … Wikipedia
Stephen D. Unwin — is a physicist and author best known for his book, The Probability of God . Unwin is a graduate of Imperial College London and received his doctorate in theoretical physics from the University of Manchester for his research in the field of… … Wikipedia
