miniaturize electronic equipment.
PRINTED CIRCUIT BOARD - a flat, insulating surface upon which printed
wiring and miniaturized components are connected in a predetermined design
and attached to a CB.
- an assembly technique
in which PCBs are stacked
connected together to form a module. This technique increases the packaging
density of circuit components and results in a considerable reduction in the
size of electronic equipment.
INTEGRATED CIRCUIT - a device that integrates (combines) both active
components (transistors, diodes, and so on) and passive components (resistors,
capacitors, and so on) of a complete electronic circuit in a single chip.
INTEGRATED CIRCUIT BOARD - a plastic card on which ICs (chips) are
TWO BASIC TYPES OF ICs two basic types are the hybrid and the monolithic.
IN THE MONOLITHIC IC - all elements (resistors, transistors, and so on)
associated with the circuit are fabricated inseparably with a continuous piece
of material (called the substrate).
IN THE HYBRID IC - the passive components (resistors and capacitors) are
deposited onto a substrate (foundation) made of glass, ceramic, or other
insulating material. Then the active components (diodes and transistors) are
attached to the substrate and connected to the passive components using fine
23 June 2005