What Is a Central Processing Unit (CPU)?
A central processing unit (CPU) is the primary processor in a computer. Its electronic circuitry executes the instructions of a computer program, including arithmetic, logic, control, and input/output (I/O) operations. The CPU is installed in a socket on the motherboard, the main circuit board that connects all computer components. Its components include the arithmetic logic unit (ALU), the control unit (CU), registers, cache, and a clock.
How a CPU Works
The CPU runs the computer's operating system and applications. It receives instructions from hardware and software, performs calculations, makes logical decisions, and coordinates the operations that allow software to run. The processor cores carry out these tasks, and the cache stores frequently used data close to those cores so that instructions complete faster. The clock sets the pace at which the processor works. Processor speed is commonly stated as a maximum frequency in GHz.
Key CPU Specifications
| Specification | What It Describes |
|---|---|
| Cores | Number of independent processing units in the CPU |
| Max frequency | Highest clock speed the processor reaches, in GHz |
| Cache | Fast memory on the CPU that holds frequently used data, in MB |
| Main memory | System RAM available to the CPU, in GB |
Use Cases
CPUs are used in desktop and laptop computers, servers, embedded systems, and industrial equipment. In industrial and commercial settings, a CPU runs control software, data collection, machine interfaces, digital signage, and point-of-sale tasks.
Thinvent Products with This Processor
Thinvent's Aero Mini PC range uses the Intel N5095A processor, an 11th generation Celeron series CPU with 4 cores, a maximum frequency of 2.9 GHz, and 4 MB of cache. Each model includes 16 GB of DDR4 RAM and a 128 GB SSD, with a 12V 5A power adapter. The range is available with Windows 11 IoT, Windows 11 Professional, DOS, or Thinux Embedded Linux, and some configurations include a Thinvent keyboard and mouse set.