Computer Storage and Memory Devices Class 4

Computer Storage and Memory Devices Class 4

Computer Storage and Memory Devices Class 4 | Class 4 Computer Question Answers | for the students of CBSE / ICSE / State board examination.

Fill in the blanks-

1024 bytes = ____________ [1 KB / 1 GB / 1 TB]

What type of media does high-definition video store? [DVD / Blu Ray]

Information or data is directly retrieved by the CPU from the ______. [RAM/HDD]

A secondary storage device is one of the following? 

2 TB to 5 TB of data can be stored on a …………. [HDD / DVD]

……………. memory consists of RAM and ROM. [Primary / Secondary]

……………. storage is another name for secondary memory. [Auxiliary /Tertiary]

One GB is equal to …………. MB. [1024 / 1014]

Individually, a binary number is known as a …………. [bit /byte]

………….. represent a single binary digit. [Bits / Bytes]

 

Answer the following questions

 

What is the use of Machine Language? 

Using machine language, a computer understands and stores data and information. The binary digits of a machine language are 0 (False) and 1 (True/ON).

 

 What is computer memory?

Computer memory is a physical storage device, such as chips, that can record and store information temporarily or permanently. It is a storage space for storing data and instructions for processing or further use. There are two types of memory in a computer, which are primary and secondary. A computer’s storage capacity refers to how much data it can hold.

 

Define cache Memory?

In computer systems, cache memory serves as a buffer between RAM and the CPU. The main purpose of this is to reduce the average time to access data from the main memory.

 

Define RAM and ROM.

RAM stands for Random Access Memory. It is also called the main memory of the computer. This memory contains the data and instructions on which the computer is currently operating.

ROM is an acronym for Read-Only Memory. As the name indicated, information can only be read from this type of memory.

 

What is Secondary Memory?

Secondary memory is also known as external memory or auxiliary storage. A large amount of information is stored permanently until someone deletes it. Secondary memory is necessary for a computer because the internal memory has a limited capacity for storing data. Computers use secondary storage devices such as hard disks, CDs, DVDs, pen drives, and memory cards to store data and information.

 

Define Hard disc. 

Hard disks are magnetic secondary storage devices. Hard disks are the main secondary storage devices in computers. A hard drive can store data up to 2 TB to 20 TB. There are two types of hard disks- Internal and External.

 

Define pen Drive.

A Pen drive is also known as a flash drive. It is commonly used for storing large amounts of information. Transferring data between computers is very easy with a pen drive. They are portable, lightweight, and small.

 

Define CD. 

A compact disc (CD) is a type of optical secondary storage device. It is round and small. Generally, CDs are portable devices that we use to store text, video, audio, graphics, and images, as well as to take backups of data, programs, and software. The maximum capacity of a CD is 700 MB.

 

History of Computers