Microcomputer

Commodore-64-Computer-FL

Raspberry Pi 4 Model B - Side

Home or Personal Computers from 1977 - Commodore PET 2001, Apple II, TRS-80 Model I, together called 'Trinity77' (edited image)

Early Personal Computers

PDP-11-M7270

Microcomputers are a class of computers that are characterized by their small size, low cost, and minimal computing power when compared to larger systems like mainframe computers and minicomputers. They are also known as personal computers or PCs. The term "microcomputer" comes from the use of microprocessors as their central processing unit (CPU).

History

The development of microcomputers was made possible by the invention of the microprocessor, a single chip that could perform all the functions of a computer's central processing unit. The first commercially available microprocessor, the Intel 4004, was released in 1971. This paved the way for the first microcomputers in the early 1970s.

One of the first microcomputers to gain popularity was the Altair 8800, introduced in 1975. It was sold as a kit through mail order and is often credited with sparking the home computer revolution. Following the success of the Altair, other microcomputers such as the Apple II, Commodore PET, and Tandy TRS-80 were released, further popularizing the concept of personal computing.

Components

A typical microcomputer consists of a microprocessor, memory (RAM and ROM), input/output (I/O) devices, and storage. The microprocessor acts as the brain of the computer, executing instructions and controlling the other components. Memory is used to store data and instructions temporarily, while I/O devices such as keyboards, mice, and display monitors allow the user to interact with the computer. Storage devices, such as hard drives and solid-state drives, provide long-term data storage.

Applications

Microcomputers are used in a wide range of applications, from personal computing and gaming to business and education. They are also employed in embedded systems, such as household appliances, automotive electronics, and industrial control systems, where they perform specific control tasks.

Impact

The advent of microcomputers has had a profound impact on society. They have democratized access to computing resources, enabling individuals and small businesses to perform tasks that were previously possible only on larger systems. Microcomputers have also spurred innovation in software development, leading to the creation of numerous applications that enhance productivity, creativity, and communication.

Current Trends

With advancements in technology, modern microcomputers have become increasingly powerful and compact. Today's PCs, laptops, and even mobile devices like smartphones and tablets possess computing capabilities that far exceed those of the early microcomputers. The trend towards miniaturization and integration continues, with microcomputers becoming an integral part of everyday life.

See Also

• Microprocessor
• Personal Computer
• Embedded System
• Mainframe Computer
• Minicomputer