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(computer science)
An instruction that causes the contents of a specific storage location in a computer to be displayed.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.


The command in most microcomputer BASICs for reading memory contents (a byte) at an absolute address. POKE is the corresponding command to write a value to an absolute address.

This is often extended to mean the corresponding constructs in any High Level Language.

Much hacking on small microcomputers without MMUs consists of "peek"ing around memory, more or less at random, to find the location where the system keeps interesting stuff. Long (and variably accurate) lists of such addresses for various computers circulate (see interrupt list). The results of "poke"s at these addresses may be highly useful, mildly amusing, useless but neat, or total lossage (see killer poke).

Since a real operating system provides useful, higher-level services for the tasks commonly performed with peeks and pokes on micros, and real languages tend not to encourage low-level memory groveling, a question like "How do I do a peek in C?" is diagnostic of the newbie. Of course, operating system kernels often have to do exactly this; a real C hacker would unhesitatingly, if unportably, assign an absolute address to a pointer variable and indirect through it.
This article is provided by FOLDOC - Free Online Dictionary of Computing (
References in periodicals archive ?
Within the past decade, implantable polyetheretherketone (PEEK) polymers have matured into an established and widely accepted family of biomaterials for spinal devices.
Star Dental chose to mold the bushings, bearings, and vanes with Victrex polyetheretherketone, or PEEK, a thermoplastic supplied by Victrex USA Inc.
"The new material expands Solvay's proprietary AvaSpire AV-600 PAEK series by providing a higher-performing alternative to polyetheretherketone (PEEK) in ultrathin film applications," the company says.
Made of polyetheretherketone, the Sovereign device is radiolucent on X-rays and can be used as a stand-atone device or in conjunction with supplemental fixation, according to the company.
The tubes are extruded of polyetheretherketone polymer, or PEEK, which is supplied by Victrex USA of Greenville, N.C.
Thermoset polyimide has a minimum tensile strength of 20,000 psi (138 MPa), which is 30% greater than high-performance thermoplastics such as polyetheretherketone (PEEK).
Made of polyetheretherketone (PEEK), the implant is virtually invisible on X-rays, which lets the surgeon view the spinal fusion during a follow-up visit.
Schlotter GmbH of Geislingen, Germany, chose polyetheretherketone, or PEEK, as a substrate to use in its Slotosit KM metallization process, which plates the substrate with copper to create electrical components.
Modern Plastics of Bridgeport, Connecticut, USA, has added a permanent implantable medical grade PEEK, MediPEEK-IM (polyetheretherketone), a high-performance semicrystalline thermoplastic designed for long-term body contact as an implantable material.