MOUSE
- The first computer mouse was invented by Doug Engelbart on 1964.
- It was named after a “mouse” because it's shaped like one, with its connecting wire resembling the tail of the said rodent.
- It can be cordless. Instead of connecting to the computer just like the plugged in models, there are kinds that uses radio waves to communicate with the machine.
KEYBOARD
- It is invented by Christopher L. Sholes in the 18th century.
- The oldest model was the “Binac Model”.
- The latest layout of modern keyboards was named as “QWERTY”, whose name came from the first five letters in the first row.
MOTHERBOARD
- Is also known as the system board, the logic board or the main board.
- It is connected to other parts of the computer using the ribbon cables or other connection devices.
- A lot of people believe that the hard drive is part of the motherboard but it is not. The former is separately installed in another area of the PC.
PRINTER
- Johannes Gutenberg was known as the father of modern printer.
- The laser printer is invented by Chester Carlson in 1938 but. No one was interested with his invention so, he agreed to sign a legal partnership with Haloid company (later known as the Xerox Corp).
The motherboard provides the connections and sockets that let other components communicate with each other. Motherboards come in different shapes and sizes — a motherboard in a laptop computer might not look like one from a desktop PC.
The Processor
The computer brain is a microprocessor called the central processing unit (CPU). The CPU is a chip containing millions of tiny transistors. It’s the CPU’s job to perform the calculations necessary to make the computer work. The transistors in the CPU manipulate the data. You can think of a CPU as the decision maker.
The computer brain is a microprocessor called the central processing unit (CPU). The CPU is a chip containing millions of tiny transistors. It’s the CPU’s job to perform the calculations necessary to make the computer work. The transistors in the CPU manipulate the data. You can think of a CPU as the decision maker.
Memory
Another critical component in computers is memory. The two most important kinds of memory are read-only memory (ROM) and random access memory (RAM). Computers can read data stored in ROM, but can’t write new data to it. With RAM, computers can read from and write to that memory. Without computer memory, every calculation on a computer would be stateless. That means there’d be no way to preserve information from one moment to the next and every process would start on a clean slate. That’s not useful if you want to create complex programs.
Another critical component in computers is memory. The two most important kinds of memory are read-only memory (ROM) and random access memory (RAM). Computers can read data stored in ROM, but can’t write new data to it. With RAM, computers can read from and write to that memory. Without computer memory, every calculation on a computer would be stateless. That means there’d be no way to preserve information from one moment to the next and every process would start on a clean slate. That’s not useful if you want to create complex programs.
Many desktop PCs have the capacity for additional RAM. The user simply has to open the computer and plug RAM chips into the appropriate sockets on the motherboard. But other computers are sealed systems, you aren’t meant to open them and make changes so you’re pretty much stuck with what you’ve got.
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