What is a triode and how to identify its pin?
An integrated circuit is a kind of microelectronic device or component that is an active component (transistor, diode), passive components (resistors, capacitors, etc.) that make up the circuit and its interconnection wiring, through a semiconductor process or a thin, thick film process (or The combination of these processes is fabricated on a semiconductor or insulator substrate to form a structurally closely related circuit with a certain function. Compared with a circuit composed of discrete components, it has a small volume, a light weight, a short lead, and a small number of solder joints. High reliability, low power, easy to use and low cost. It is indicated by the symbol U in the circuit.
The IC is a polar component. It has only one direction when it is inserted into the board. If it is inserted in the wrong direction, its function will not be displayed, and even it will melt or burn out.
Identification of the first pin of the IC: Holding the IC with its pin outward, the component body facing itself, the polarity flag is up, and the first pin to the left of the polarity flag is the first pin. All pins of the IC should have a number.
The method of marking the first pin can be marked with a small notch or a small white dot next to the first pin. The first pin is usually inserted into one of the discs, and the circuit board has a pointed. When the IC is inserted into the board, the notch on the component body is facing the tip.
There are many types of ICs, such as TTL series (NAND gate), RAM series (random memory), ROM (read only memory), EPROM (ultraviolet erasable read only memory) series, PAL (programmable logic array) ).
Single chip microcomputer
A single-chip microcomputer is an integrated circuit chip, which is a CPU with a data processing capability, a CPU random access memory RAM, a read-only memory ROM, various I/O ports and interrupt systems, timers/timers, etc. The function (which may also include display driver circuit, pulse width modulation circuit, analog multiplexer, A/D converter, etc.) is integrated into a small silicon computer to form a small and perfect computer system. .
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