Pic Tutorial

The first single chip microprocessor was the 4 bit Intel 4004 released in 1971, with other more capable processors available over the next several years.
These however all required external chip(s) to implement a working system, raising total system cost, and making it impossible to economically computerise appliances.
The first computer system on a chip optimised for control applications – microcontroller was the Intel 8048 released in 1975[citation needed], with both RAM and ROM on the same chip. This chip went on to be found in over a billion PC keyboards, and numerous applications.

Most microcontrollers at this time had two variants. One had an erasable EEPROM program memory, which was significantly more expensive than the PROM variant which was only programmable once.
In 1993, the introduction of EEPROM memory allowed microcontrollers (beginning with the Microchip PIC16x84) [1][citation needed]) to be electrically erased quickly without an expensive package as required for EPROM, allowing both rapid prototyping, and In System Programming.
The same year, Atmel introduced the first microcontroller using Flash memory. [6].

Other companies rapidly followed suit, with both memory types.

Cost has plummeted over time, with the cheapest microcontrollers being available for well under $0.25 in 2009 , and 32 bit microcontrollers under $5.
Nowadays microcontrollers are low cost and readily available for hobbyists, with large online communities around certain processors.

2 Responses to “History Of Microcontroller”