Disk-drive performance characteristics — are the attributes which control the time it takes to transfer (read or write) data between a computer and a data storage device (most typically disk storage) starting with the initial command from the computer or host until the storage device… … Wikipedia
Access time — is the time delay or latency between a request to an electronic system, and the access being completed or the requested data returned.* In a telecommunications system, access time is the delay between the start of an access attempt and successful … Wikipedia
Seek time — is one of the three delays associated with reading or writing data on a computer s disk drive, and somewhat similar for CD or DVD drives. The others are rotational delay and transfer time, and their sum is access time. In order to read or write… … Wikipedia
Fragmentation (computer) — In computer storage, fragmentation is a phenomenon in which storage space is used inefficiently, reducing storage capacity. The term is also used to denote the wasted space itself.There are three different but related forms of fragmentation:… … Wikipedia
Sequential access memory — In computing, sequential access memory (SAM) is a class of data storage devices that read their data in sequence. This is in contrast to random access memory (RAM) where data can be accessed in any order. Sequential access devices are usually a… … Wikipedia
Hard disk drive — Hard drive redirects here. For other uses, see Hard drive (disambiguation). Hard disk drive Mechanical interior of a modern hard disk drive Date invented 24 December 1954 [1] … Wikipedia
spectroscopy — spectroscopist /spek tros keuh pist/, n. /spek tros keuh pee, spek treuh skoh pee/, n. the science that deals with the use of the spectroscope and with spectrum analysis. [1865 70; SPECTRO + SCOPY] * * * Branch of analysis devoted to identifying… … Universalium
Twin paradox — In physics, the twin paradox is a thought experiment in special relativity, in which a twin makes a journey into space in a high speed rocket and returns home to find he has aged less than his identical twin who stayed on Earth. This result… … Wikipedia
Motion simulator — Simulator seating St. Louis Zoo A motion simulator or motion platform is a mechanism that encapsulates occupants and creates the effect/feelings of being in a moving vehicle. Motion simulators fall into two categories (described below) based on… … Wikipedia
explosive — explosively, adv. explosiveness, n. /ik sploh siv/, adj. 1. tending or serving to explode: an explosive temper; Nitroglycerin is an explosive substance. 2. pertaining to or of the nature of an explosion: explosive violence. 3. likely to lead to… … Universalium
