The older systems, installed in 1984, use Model Ho3 PCs with 8086 processors and 8087 math coprocessors
. The newer systems, called E-Z-Cam II, have Model 286 PCs with 80286 processors and 80287 math coprocessors
It has a 64-bit data path, a 16K internal cache, a much faster math coprocessor
unit than the 486, superscalar architecture (more than one operation per clock tick), and improved data corruption checking.
Still, it's nice to sit down and watch your computer do most of the thinking for you, spitting out solutions to complex Box-Jenkins models every two seconds (if you have a built-in math coprocessor
) or every thirty seconds (if you don't).
More expensive models feature faster operations (referred to as MHz); a math coprocessor
for mathematical calculations and drawings; a faster display driver to "draw" things on your monitor; bigger monitors that are easier on your eyes and make work easier; larger hard drives to store more information; more computer memory, which makes everything work faster; software with more features (which you may never use); and a wide range of accessories.
* Boosting processing speed by replacing old computers with new, high-speed models or adding a math coprocessor
, a special plug-in circuit that speeds calculations.
Its one chip combines a microprocessor (80386), a floating-point math coprocessor
(80387), a memory cache controller (82385), and 8 kilobytes of RAM cache.
This computer, which contains 4MB of memory, a CGA monitor and a math coprocessor
, is connected to two 25" color graphics monitors located at opposite ends of the room.
In March 1983, IBM introduced the XT, with a hard disk and the 8087 math coprocessor
It's a slower 80486 without the math coprocessor
. The 80486SX is dead technology, Intel's advertisements notwithstanding.
Hardware requirements: IBM or compatibles, 640 Kb RAM, math coprocessor
Speed -- it's one of the fastest on the market and doesn't require a math coprocessor
(although a coprocessor version exists);