Microprocessor in Computers

Due to different discoveries, the possibility of modern computers increased, in which one of the most important is the microprocessor. The mindset of people has completely changed because of this tiny silicon chip. It really helped in making computers personal, and now you can give power from mobile phones to powerful servers.

Now in this blog, we will discuss about microprocessor in computer, its invention, main functions, different types, and some examples.

What is a microprocessor in a computer?

So microprocessors help computers to work like the brain of the system. It is basically a small chip that mostly covers the work of the system like running programs and controlling hardware. In early times we needed separate chips for tasks like logic and math, but now with the help of a microprocessor all tasks are in one small unit.

Microprocessors mostly work by handling instructions that are saved in the computer’s memory. It takes the data, does calculations, and then other parts work by taking the commands from the microprocessor.

For example, when we open a browser, the microprocessor reads the instructions, controls the memory, talks to the storage, and then finally shows the result on the screen. So, the existence of computers that we are using nowadays would not be possible without microprocessors.

Even millions or billions of tasks can be handled with the help of a microprocessor in one second. This helps in running complex programs and handling many things at the same time. It is not only used in computers but also in devices like smartphones, washing machines, cars, and medical machines due to its speed and small size.

Microprocessor Invention

In the early 1970s, microprocessor invention started. The first microprocessor was made in 1971, i.e., Intel 4004. The inventors were Federico Faggin, Ted Hoff, and Stanley Mazor. It was first designed for a Japanese calculator company called Busicom.

Now the microprocessor Intel 4004 could do nearly 92,000 instructions in one second with about 2,300 transistors. So according to that time, it was a big achievement compared to today. Without the microprocessor, computers needed different circuits to work, which were very large and costly at that time.

So, after putting all the main processing work onto one small chip, computers changed completely. That helped in making the device smaller, cheaper, and easier for people to use. So this invention helped in creating personal computers, game consoles, and later smartphones.

Companies like Intel, Motorola, and AMD made stronger processors in the late 1970s and 1980s after the Intel 4004. But the new invention of microprocessors has billions of transistors, many cores, and runs at very high speeds (gigahertz), giving power to devices from laptops to supercomputers.

Function of Microprocessor

The function of microprocessor technology is to run instructions, do calculations, and control the work of the computer. It mainly does four tasks: fetch, decode, execute, and store.

• Fetching: The microprocessor takes the instructions that are like a command from the computer’s memory and follows them, which helps in deciding what to do.
• Decoding: After taking instructions from the computer’s memory, the microprocessor understands them and then changes the code into signals to tell different parts of the processor how to work on it.
• Executing: During execution, the microprocessor performs different tasks like adding or subtracting, comparing numbers by checking conditions, and also moving data between memory and devices.
• Storing: In this step, the result will be saved into memory or sent to an output device (like the screen or printer).

Except these four steps, the microprocessor also does multitasking and handles sudden signals (interrupts). At the same time, modern processors can work on many instructions by taking help from pipelines, caches, and parallel units.

Microprocessor also helps in connecting different parts of the computer with each other by controlling the data that moves between memory, storage, input devices, and output devices. For doing logical tasks, processing data, and running programs, the need for a microprocessor is very important.

Types of Microprocessors

For meeting different needs, over time different types of microprocessors have been made:

1. CISC (Complex Instruction Set Computing): With just one command these types of microprocessors can perform complex tasks. An example of CISC is Intel’s x86 processor that is mostly used in laptops and desktops.
2. RISC (Reduced Instruction Set Computing): For using fewer and simpler instructions we can use RISC, which is faster in many cases. Example of RISC is ARM processors which are mostly used in smartphones.
3. Embedded Microprocessors: These microprocessors are mostly used in bigger systems like appliances, cars, and machines for performing special tasks. They use less power and can work reliably.
4. DSP (Digital Signal Processors): For handling audio, video and other signals this type of microprocessor will be used.
5. Multi-core Processors: For doing multitask at the same time we will use multi-core microprocessor because it will possess many cores on one chip. Like quad-core, hexa-core, and octa-core processors.

Examples of Microprocessors

There are some well-known microprocessors that have become important in computer history from time to time.

1. Intel 4004: This microprocessor is the starting point that was launched in 1971.
2. Intel 8085: This one was launched in the mid-1970s, helped in learning purposes, and it contained 8 bits.
3. Motorola 68000: This microprocessor was early used in Apple Macintosh computers, Sega gaming consoles, and many other devices, and it is a well-known 16/32-bit processor.
4. Intel Pentium Series: They were launched in the 1990s, and for better speed and power, these processors became very popular in personal computers.
5. AMD Ryzen: These processors are very fast in speed and compete with Intel’s Core series, a new family of processors.

With different examples of microprocessors, we can see how different types of microprocessors have changed over time with their updated versions from 4-bit to 8-bit. Each one is improving for personal computers.

Conclusion

So in computing, microprocessor plays a very important role that works like a brain of a computer and helps in handling all tasks efficiently. After the first invention in 1971, these microprocessors are updating from single chip microprocessor to multiple like Intel, AMD, ARM, and Apple. And nowadays they are used in different places like phones, cars, appliances, and wearables. They are continuously helping in getting a better future in technology with more efficiency, speed, and smaller capacity.

Written by: Zubagha Nazim Ali