- As it is with all electronic circuit designs, the creation of microprocessors begins at an engineer's computer. Engineers use software (such as Cube Suite) to design the patterns of the microprocessor and the pins used to connect microprocessors to circuit boards. The design is created using graphical user interface tools in the software (tools are different with each software). In addition to designing the physical microprocessor, its software counterpart must be programmed using an assembly language. To use an assembly language for writing instructions for microprocessors, begin with learning the common and fundamental programming languages used in the industry, like BASIC and the C/ C+ programming languages. Use C/ C+ and Visual Basic (.net or 6.0) for customizing your technical drawings in CAD (computer aided drawing software). Use CAD-Electrical for all microprocessor, microchip, and electrical designs.
- A dozen microprocessors are created on a single strip of silicon, which is referred to in the microprocessor industry as a wafer. Crystalline ingots are grown on the wafer using a photovoltaic, silicon crystal furnace. Permanent circuitry patterns are etched onto the microprocessor wafer with a laser. Etching is nothing more than removing the unwanted portions of the crystalline surface on a wafer. The result is a pattern which will carry the flow of electricity to various components across the surface of the wafer. Components, such as electrodes and diodes, are placed on the wafer with a eutectic bonder (device with an arm and vacuum head for picking up solder cubes and placing them on circuits to mount components). Wafers are separated into individual components referred to as dies. To separate these chips from the wafer, use a dicing machine (CNC programming is usually required to set up the measurements for the cutting).
- Every microprocessor is inspected by quality assurance (QA) personnel. QA technicians wear protective coats or suits while working with microprocessors. These protective garments prevent dust from getting on a microprocessor. Dust particles can be hundreds of times larger than the features on a microprocessor chip. The tools used to inspect microprocessors include, smart scopes (checking dimensional measurements), RAM optical measuring systems (chip calculations), leak detectors, calipers, and stereo microscopes.
- Completed microprocessors are packaged in tiny, rectangular packages made from ceramics. On these ceramic rectangles is an array of pins. The pins are used to connect the microprocessor housing on to a printed circuit board (usually the motherboard in a computer). An antistatic bag is often used as a package for the microprocessors prior to shipping to the store.
