Computer Memory Video Lecture | SSC CGL Tier 2 - Study Material, Online Tests, Previous Year

Ans. Computer memory refers to the physical devices or components that store data and instructions temporarily or permanently on a computer. It allows the computer to store and retrieve data quickly for processing.

Ans. There are several types of computer memory, including: - Random Access Memory (RAM): It is the main memory of a computer that stores data and instructions temporarily while the computer is running. - Read-Only Memory (ROM): It is a type of memory that stores permanent instructions and data that cannot be modified or erased. - Cache Memory: It is a high-speed memory that stores frequently accessed data to improve the computer's performance. - Virtual Memory: It is a memory management technique that allows the computer to use a portion of the hard disk as an extension of RAM. - Flash Memory: It is a non-volatile memory that retains data even when the power is turned off, commonly used in USB drives and solid-state drives (SSDs).

Ans. Computer memory works by storing and retrieving data using binary code. When the computer processes a program or application, the data and instructions are temporarily loaded into the RAM for faster access. The CPU fetches the data from the memory, performs calculations or operations, and then stores the results back into the memory. This cycle continues until the program or task is completed.

Ans. RAM (Random Access Memory) and ROM (Read-Only Memory) are two different types of computer memory. The main differences between them are: - RAM is volatile memory that can be read from and written to, while ROM is non-volatile memory that can only be read. - RAM stores data and instructions temporarily while the computer is running, whereas ROM contains permanent instructions and data that cannot be modified. - RAM is faster but has limited capacity, while ROM is slower but has larger storage capacity. - RAM loses its data when the power is turned off, whereas ROM retains its data even without power.

Ans. The amount of memory required for a computer depends on the specific requirements of the tasks and applications it will be used for. Generally, more memory allows for smoother multitasking and faster program execution. For basic tasks like web browsing and word processing, 4GB to 8GB of RAM is usually sufficient. However, for more demanding tasks like video editing or gaming, 16GB or more may be recommended. It is important to consider the operating system requirements and the software you plan to use when determining the memory needs of a computer.