Back pain can also result from more-serious injuries, such as a vertebral fracture or ruptured disk; from arthritis and other age-related changes in your spine; and from certain infections. Possible causes of back pain include: 1  Ankylosing spondylitis.  Meralgia paresthetica.
Noun. 1. microcomputer-a small digital computer based on a microprocessor and designed to be used by one person at a time. PC, personal computer. desktop computer-a personal computer small enough to fit conveniently in an individual workspace.
The micron or micrometer is a unit of measure for the core in optical fiber, for which the most common diameter is 62.5 micrometers. It is also used to measure the line width on a microchip. Intel's Pentium 4 microprocessors are built using 0.18 or 0.13 micrometer line widths. AMD's Athlon uses a 0.18 line width.