Question

name any two secondary storage devices and mention their characteristics

Answer 1

answer: Name of two secondary storage devices are as follows:

1.CD

2.SD card  

characteristics of secondary storage devices :

1.CD:  

1). CD stands for compact disc.

2).It is a molded plastic disk scanned by laser.

3). A standard CD is 120mm in diameter and 1.2 mm thick.

4).It is used for  of audio and data storage.

2.SD card :

1). it is a non volatile memory cards.  

2).its  capacity is measure in giga byte such as 16GB,64GB.  

3).Power consumption is very low .

4). it uses flash memory, they posses  limited number of cycles so life span gradually decreases