MICROPROCESSOR AND MICROCONTROLLER

ICT

ARCHITECTURE OF 8085

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which of the following should only be used for data storage?
A
DVD drive
B
Scanner
C
Monitor
D
Speakers
Explanation: 

Detailed explanation-1: -Optical storage is any storage type in which data is written and read with a laser. Typically, data is written to optical media such as compact discs (CDs) and digital versatile discs (DVDs).

Detailed explanation-2: -A standard single-sided, one-layer DVD can hold 4.7 gigabytes of data and 8.5 GB if it’s a double-layer disc. A single-layer HD-DVD stores up to 15 GB of storage capacity, and a dual-layer disk provides up to 30 GB.

Detailed explanation-3: -Storage devices can include hard disk drives (HDDs), flash-based solid-state drives (SSDs), optical disc drives, tape systems and other media types.

Detailed explanation-4: -An optical reader (part of the CD or DVD drive) uses a laser to read the pits and lands to interpret the data; as such, the medium relies on light for storage and retrieval. Thus the term ‘optical disc. ‘

There is 1 question to complete.