Learn: RAM - Purpose and Key Characteristics

Welcome!You've already learned why computers need primary storage. Now, let's dive into RAM (Random Access Memory) and explore its purpose and characteristics.

What is RAM?RAM (Random Access Memory) is a type of primary storage that temporarily holds data and instructions that the CPU needs while a computer is running. It is much faster than secondary storage but is volatile, meaning its contents are lost when the power is turned off.

Why is RAM Important?RAM allows the CPU to access data quickly, which helps the computer run programs smoothly. Without enough RAM, a computer may have to use slower storage like a hard drive, leading to delays.

Key Characteristics of RAMRAM has several important features:Volatile: Data is erased when the computer is turned off.Fast: Accessing data in RAM is much quicker than accessing data stored on a hard drive.Temporary: RAM is used to store data and instructions only while they are actively needed.

How Does RAM Work?When you open a program, it is loaded from secondary storage (like a hard drive) into RAM. The CPU then accesses the program's data and instructions directly from RAM, which speeds up processing.

Why Does RAM Affect Performance?The more RAM a computer has, the more data and instructions it can store for quick access. If there isn’t enough RAM, the computer will rely on slower secondary storage, causing delays.

Review Time!Great work! You've learned the purpose and key characteristics of RAM. Let's test your understanding with a few final questions.