ROM

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ROM

Computing
read only memory: a storage device that holds data permanently and cannot in normal circumstances be altered by the programmer
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005

rom

[räm]
(electricity)
A unit of electrical conductivity, equal to the conductivity of a material in which an electric field of 1 volt per meter gives rise to a current density of 1 ampere per square meter. Derived from reciprocal ohm meter.

ROM

[räm]
(computer science)
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

ROM

This article is provided by FOLDOC - Free Online Dictionary of Computing (foldoc.org)

ROM

(1) Firmware for an Android phone. See Android ROM.

(2) (Read Only Memory) A memory chip that permanently stores instructions and data. Also known as "mask ROM," its content is created in the last masking stage of the chip manufacturing process and cannot be changed. Stand-alone ROM chips and a ROM bank in microcontrollers are used to hold control routines for myriad applications. ROMs were also widely used to hold the BIOS in early PCs as well as plug-in cartridges for video games. See microcontroller.

Although EPROMs, EEPROMs, and particularly flash memory, are the kinds of non-volatile storage one hears about more often, ROM is a mature, inexpensive technology that is easy to integrate into the design of any CMOS chip.

ROMs Are Secure
Unlike flash memory, which can be updated, the data in ROM chips cannot be tampered with. If encryption keys and other security codes are stored in a ROM, they cannot be altered unless the chip is physically replaced (see secure boot). See ROM BIOS, memory types, RAM, EEPROM and flash memory.


ROMs Are Everywhere
Cartridges that contain nothing more than a ROM chip are used to hold games and educational programs. The yellow ROM cartridge in this image (bottom right) contains a program for the LeapPad Learning System for preschoolers.
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References in periodicals archive ?
All pregnant women with a singleton pregnancy between 34-37 weeks of gestational age with preterm premature rupture of membranes.
Maternal markers for detecting early-onset neonatal infection and chorioamnionitis in cases of premature rupture of membranes at or after 34 weeks of gestation: a two-center prospective study.
Preterm premature rupture of membranes vaginal abnormal effects on maternal and infant outcomes (in Chinese).
Ultrasound amniotic fluid index and regular pad inspection confirmed rupture of membranes in 7 (8%) and 14 (16%) women, respectively.
According to the latest guidelines, (3,4) when considering the unknown status of GBS colonization, 21 (81%) women met the criteria for receiving IAP (12 had premature labor; six had premature labor and rupture of membranes [greater than or equal to]18h; two had premature labor, rupture of membranes [greater than or equal to]18h and fever during labor; and one had term labor and rupture of membrane [greater than or equal to]18h).
Rupture of membranes for >12 hrs and late preterm and term PROM mothers were associated with a higher percentage of positive cultures.
There Is obvious pooling in the vaginal vault, and rupture of membranes is confirmed with appropriate testing.
Preterm premature rupture of membranes (PPROM) refers to rupture of membranes prior to the onset of labor before 37 weeks' gestation.
Management options for term pre labour rupture of membranes include either expectant management or planned early birth by induction of labour.
Pre labor rupture of membranes (PROM) at term is defined as rupture of membranes with a latent period before the onset of uterine activity at or beyond 37 weeks of gestation.
It can be a challenge to accurately diagnose rupture of membranes, said Dr.