What is CPU, UC and UAC, RAM, ROM and central

In computer science (discipline dedicated to the management of information in an organized and structured way mediated by technological elements, there are several concepts that are compulsory learning, while they are extremely elementary, and related to hardware (the physical parts of a system).

The CPU, or also referred to as the central processing unit, is divided into two types

• SAT
• ATX

The SAT is responsible for handling connectors other than the ATX (p4, p5, p8, p9). They were the old CPUs. They did not handle automatic shutdown.

The ATX (it is still possible to find them) handles united connectors (integrated link, both in one). It is from a single connection source and handles automatic shutdown.

What is UC

The UC means control unit, for its acronym in English (united control), is also called board. It is the motherboard of a computer.

What is UAC?

The UAC is the Logical Arithmetic Unit. It is responsible for processing the logical, mathematical, system, etc. functions. For example: Excel, Elisa, Siigo, etc.

So far we are referring to parts of the hardware of a computer. Among those parts we also find:

Central memory

• RAM
• ROM memory

The central memory is also denoted cache memory, which is additional to the board.

RAM is one that can be removed, modified or updated. Among the RAM memories we have three classes:

• SIM: Short memory in capacity and extension
• DIM: Current or modern, long memory
• DDR: It is DIM and it works from 256MB onwards.

ROM memory, on the other hand, is the permanent memory of the system and is NOT modifiable. It is the one that allows to execute the internal commands of the system. For example: DIR command, the ROM executes it. It allows to look at the files of the hard disk, but when they are going to run for the first time. It is used by systems engineers when they are going to develop software.