Ncert solutions for class 11 Computer Science Python Chapter 1 Computer overview and its Basics are prepared by CBSE student eCARE expert to score good marks in class 11. Classes 11 Computer Science Python Chapter 1 Computer overview and its Basics contain many topics which are very important to score good in class 11. There are some important topic mentioned below:
Memory Unit stores the data, instructions, intermediate results and output temporarily, during the processing of data. This memory is also called the main memory or primary memory of the computer. The input data that is to be processed is brought into the main memory before processing.
Speed, accuracy, diligence, storage capability and versatility are some of the key characteristics of a computer. A brief overview of these characteristics are :
A computer is an electronic device which can perform various operations correctly and fast. For example data processing, huge calculations etc. Characteristics of computer :
Which part interprets program instructions and initiate control operations ?
What is primary memory ?
Primary memory : This is the storage section of computer which is used to store data or instructions or both for processing purpose. This is non-volatile in nature.
What is RAM ?
RAM : RAM stands for Random Access Memory.
This is the main memory of computer used to retain user’s instructions and data for processing purpose. This is volatile in nature .
What is ROM ?
ROM : ROM stands for Read Only Memory. ROM applies to semiconductor memory whose contents cannot be altered, once they have been set. So non-volatile in nature.
What is PROM ?
PROM : PROM stands for Programmable Read Only Memory. A control memory in which stored
contents can be altered once after they have been set.
What is EPROM ?
EPROM : EPROM stands for Erasable Programm able Read Only Memory. It can be erased and programmed with a special type of equipment. If it is exposed in ultraviolet light, it allows data to be erased and reprogrammed.
What is EEPROM ?
EEPROM : EEPROM stands for Electrically Erasable Programmable Read Only Memory. This type of ROM can be erased and programmed with the help of electric pulse.
Give three examples of both input devices and output devices.
Input Devices :
Output Devices :
A computer has following disadvantages :