read-onlyadj.

Brit.

/ˌriːdˈəʊnli/, U.S.

/ˈridˌoʊnli/

Origin: Formed within English, by compounding. Etymons: read v., only adv.

Etymology: < read v. + only adv. Compare later read-mostly adj.

Originally: (Computing) designating a memory whose contents cannot be changed by program instructions but which can usually be read at high speed; designating a device incorporating such a memory. Later also: designating a recording device (as a CD or a DVD) which can be played but on which no further recordings can be made. Cf. ROM n.³Cf. also PROM n. at P n. Initialisms, EPROM n., particular kinds of read-only memories.

ΘΚΠ

society > computing and information technology > hardware > [adjective] > types of memory

static1947

read-only1961

write-once1967

read-mostly1971

bank-switched1974

1961 H. R. Foglia et al. in IBM Jrnl. Res. & Devel. 5 67/1 Another form of memory can be used that may be read at these high speeds, with capability of being changed in a few minutes. Memories of this type, in which the fast-read cycle is of prime importance, may be called read only memories.

1970 O. Dopping Computers & Data Processing x. 135 Read-only memories are sometimes used in the internal organization of a computer, but in some machines they are also used for the permanent storage of standard programs.

1983 Austral. Personal Computer Sept. 4/3 News of the plug-in read-only cartridge is likely to be delayed.

1984 Byte Dec. 10 NAPC's Philips Subsystems and Peripherals Inc...will offer its CM 100 Compact Disc Read-Only-Memory (CD ROM) unit to other manufacturers.

1991 S. Winchester Pacific (1992) 357 They would also permanently engrave a number of Macintosh's unique features..into the read-only-memory.

1996 Byte Oct. 139/1 Many users will prefer a rewritable CD drive to a read-only DVD drive.

2000 P. Ceruzzi in R. Rojas & U. Hashagen First Computers ii. 214 Cheap read-only memory chips meant that the designer could create these rich instruction sets at low cost.

This entry has been updated (OED Third Edition, December 2008; most recently modified version published online March 2022).

单词	read-only
释义	read-onlyadj. Brit. /ˌriːdˈəʊnli/, U.S. /ˈridˌoʊnli/ Origin: Formed within English, by compounding. Etymons: read v., only adv. Etymology: < read v. + only adv. Compare later read-mostly adj. Originally: (Computing) designating a memory whose contents cannot be changed by program instructions but which can usually be read at high speed; designating a device incorporating such a memory. Later also: designating a recording device (as a CD or a DVD) which can be played but on which no further recordings can be made. Cf. ROM n.³Cf. also PROM n. at P n. Initialisms, EPROM n., particular kinds of read-only memories. ΘΚΠ society > computing and information technology > hardware > [adjective] > types of memory static1947 read-only1961 write-once1967 read-mostly1971 bank-switched1974 1961 H. R. Foglia et al. in IBM Jrnl. Res. & Devel. 5 67/1 Another form of memory can be used that may be read at these high speeds, with capability of being changed in a few minutes. Memories of this type, in which the fast-read cycle is of prime importance, may be called read only memories. 1970 O. Dopping Computers & Data Processing x. 135 Read-only memories are sometimes used in the internal organization of a computer, but in some machines they are also used for the permanent storage of standard programs. 1983 Austral. Personal Computer Sept. 4/3 News of the plug-in read-only cartridge is likely to be delayed. 1984 Byte Dec. 10 NAPC's Philips Subsystems and Peripherals Inc...will offer its CM 100 Compact Disc Read-Only-Memory (CD ROM) unit to other manufacturers. 1991 S. Winchester Pacific (1992) 357 They would also permanently engrave a number of Macintosh's unique features..into the read-only-memory. 1996 Byte Oct. 139/1 Many users will prefer a rewritable CD drive to a read-only DVD drive. 2000 P. Ceruzzi in R. Rojas & U. Hashagen First Computers ii. 214 Cheap read-only memory chips meant that the designer could create these rich instruction sets at low cost. This entry has been updated (OED Third Edition, December 2008; most recently modified version published online March 2022). < adj.1961
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