Maharashtra Board Class 9 Science Information Communication Technology
Fill in the blanks to complete the statements. Justify the statements.
[a] While working with a computer we can read the information stored in its memory and perform other actions in …………… memory.
[b] While presenting pictures and videos about the works of scientists, we can use …………..
[c] To draw graphs based on the quantitative information obtained in an experiment, one uses …..
[d] The first generation computers used to shut down because of …….
[e] A computer will not work unless …. is supplied to it.
Solutions:-
[a] While working with a computer, we can read the information stored in its memory and perform other actions in RAM memory. (Justification: RAM, or Random Access Memory, is the volatile memory in a computer that allows for quick read and write operations. It is used for actively running programs and temporarily storing data.)
[b] While presenting pictures and videos about the works of scientists, we can use multimedia software. (Justification: Multimedia software is designed to handle a variety of media types, including pictures and videos. It allows for the creation and presentation of multimedia content.)
[c] To draw graphs based on the quantitative information obtained in an experiment, one uses graphing software. (Justification: Graphing software is specifically designed for creating graphs and visual representations of data, making it suitable for drawing graphs based on quantitative information.)
[d] The first-generation computers used to shut down because of heat generated by the large valves. (Justification: First-generation computers, such as the ENIAC, used vacuum tubes or valves in their construction. These valves were large, consumed a lot of electricity, and generated significant heat, leading to shutdowns.)
[e] A computer will not work unless electricity is supplied to it. (Justification: Computers, being electronic devices, require a continuous supply of electricity to function. )
Class 9 Science Information Communication Technology Important Notes
Information Communication Technology (ICT):
Definition: ICT includes communication devices, their use, and associated services. The rapid growth of information necessitates attention to prevent knowledge obsolescence.
Devices in ICT:
Examples: Telephone for conversation, computers in various generations.
Evolution: Computers progressed through five generations, with the first generation (1946-1959) using valves and large size.
Important Components of a Computer:
Memory:
Two types: Internal (RAM and ROM) and External.
RAM is volatile and electronic, while ROM is read-only.
Operating System:
