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 ?
PEEK is a high-performance thermoplastic polymer and its glass transition and melting temperatures are ~150[degrees]C and ~343[degrees]C, respectively.
Peek Kids is a premium children's brand that is meant to embody West Coast urban sophistication.
Our specially designed Peek Freans desserts do just that.'
After PEEK had begun to capture the imagination of a handful of people, (the first batch of the HPP was manufactured at ICI2), a major chemical company, on November 19, 1978.
Results: Most of the patients had stenosis at the C5/C6 (PEEK cage group 63% and titanium cage group 47.6%) and C6/C7 (PEEK cage group 15.38% and titanium cage group 19.04%) cervical level.
Keywords: PEEK, Plasticization, Crystallinity, Organic Solvents.
Compared with standard PEEK, JBU-900X modified PEEK is said to reduce the occurrence of delamination by moldings during processing.
Nanoscale concavities of 20-50 nanometers are created by the impact of argon atoms across the entire existing microsurface of the PEEK device to create the nanotexture of PEEKplus.
During the meeting with Prime Minister Abbasi, Peek Vision was represented by Chief Executive Officer and co-founder Dr Andrew Bastawrous while CBM was represented by their Director of Inclusive Eye Health Dr Babar Qureshi.
LONDON -- On the side lines of the Commonwealth Heads of Government meetings in London, the Prime Minister held discussions with Peek Vision and CBM.