PEEK


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peek

[pēk]
(computer science)
An instruction that causes the contents of a specific storage location in a computer to be displayed.

PEEK

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.
References in periodicals archive ?
By growing PEEK Scoria directly onto the device, Vertera Spine eliminated the need for additive materials, which significantly lowered the manufacturing costs of its device vs.
3 Initial pre-clinical testing has demonstrated that bone is able to infiltrate the porous feature and form direct contact with the PEEK Scoria surface.
Increase in the consumption of PEEK in electrical & electronics and medical has been observed in Europe due to continued industrialization and rise in the manufacturing sector of the region.
Average testing time was also measured, with researchers reporting that the Snellen test took 82 seconds compared with 77 seconds for 'Peek Acuity,' which shows that using Peek is as quick to use as traditional methods, they said.
When looking to extend the performance envelope beyond Victrex Peek 150CA30, aerospace engineers have qualified Victrex Peek 90HMF40 to deliver higher mechanical properties.
Unfilled PEEK offers ductility, good impact resistance, and isotropic properties, but often lacks sufficient stiffness and strength, while reinforced PEEK grades are typically the opposite: very strong and stiff materials but comparatively brittle.
As Donna can be seen suggesting in the sneak peek, coffee is not going to make Scottie forgive Harvey.
Unlike polymers such as PEI, PPS or PPA, the excellent wear resistance, great chemical and hydrolysis resistance, good creep properties, dimensional stability and strength of Victrex Peek make it the material of choice for components subjected to high pressure steam (up to 19 bar), according to Phil Pritchard, product development manager for Victrex Polymer Solutions.
The flexible PEEK seal rings are manufactured via standard compression moulding and with ATO's specially designed Hot Compression Molding (HCM) process.
To determine the mechanical behavior, we used the quasi-static compression test for three materials, PEEK, PEEK CF 30, and PEEK Nano.
Richard Pearce, course tutor, said: "This is an enthusiastic and hard-working group and Sneaky Peek is their first exhibition.