active area


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active area

[′ak·tiv ′er·ē·ə]
(electronics)
The area of a metallic rectifier that acts as the rectifying junction and conducts current in the forward direction.

active area

The physical part of a chip that contains the transistors, resistors and capacitors, which perform the actual computing and storage operations-- the "action area." Only a few micrometers thick, which is much thinner than a postage stamp, the active area is the top part of the chip. The bottom part is the base layer, which is about a 30th of an inch thick. The chip is bonded to a housing by wires, and the housing is soldered onto the printed circuit board. See chip.

Entirely Magical
No man-made object is more incredible than the chip. Using an Intel i7 CPU as an example, many of its 731 million transistors are switching their state from on to off or off to on every second. In fact, so many transistors are changing that, in total, there are over 200 quadrillion transistor state changes per second. Imagine! More than 200 quadrillion changes per second, second after second, minute after minute, hour after hour, in perfect precision. See transistor.


A Digital Miracle
When people look at a CPU chip, they see an object the size of a small cracker, but its active area is thinner than a postage stamp. CPU chips can be as large as this and as small as the head of a pencil. See microcontroller.
References in periodicals archive ?
With our newest SPCM offering in the lower wavelength range, Excelitas will continue to lead the market in PDE, low dark counts, highest linear dynamic range, and highest uniformity over the largest available active area.
The arrays have an active area about one-third the size of existing arrays.
Jeff Engilman, one of three active area football coaches with 200 victories, retired from coaching at Sylmar High on Wednesday after 24 years.
An especially active area for Turner is the healthcare market, with demand for both new construction and the updating of existing facilities.
The Upper West Side will be the most active area in apartment construction this year, with more than 3,300 units in the planning or construction stages.
Wright concluded, "We are pleased to have the opportunity to acquire such a significant acreage position in a very active area.
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One active area is the creation of origami tessellations, where the crease patterns and folded objects look like mosaic tiling (see illustration).
2 millimeter (mm) active area diagonal; the LV-WVGA offers 852 x 480 resolution with a 11.
Opponents fear there is no water supply for Newhall Ranch, traffic and air-pollution impacts will not be adequately dealt with and homes will be built in a seismically active area.
It's a growing, changing and active area in which a number of Pace projects are underway - the South Cook County - Will County Initiative, the Transit Signal Priority (TSP) Initiative and the first service modifications made as a result of an on-time performance analysis based on data provided by Pace's Intelligent Bus System (IBS).
The park is envisioned as the city's core active area, with fields for soccer, softball, football and other sports.

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