Good Evening
Dear Candidates,
Purpose : To prepare for written exam of SBI PO/IBPS PO/CLERK/RRB PO/ASSISTANT.
Today learn the following:OTHER IMPORTANT TERMS
Central Processing Unit (processes the data)
Central Processing Unit (CPU)
Central Processing Unit is also called as the “Brain of the Computer” or Main Processor which controls all the systems inner functions.
It is very easy to replace because it is inserted into the socket and is not soldered onto the motherboard
A computer may contain more than one CPU which is nothing but MULTIPROCESSING
Two main parts of CPU are
Arithmetic Logic Unit (ALU)
Control Unit (CU).
Arithmetic Logic Unit (ALU): ALU is also called as basic building blocks of Central Processing Unit, which performs all arithmetic and logical operations like addition, subtraction, multiplication and division
Control Unit (CU): Control Unit controls the entire processing. It helps in the communication between Memory and ALU
A place where we can store the data or set of instructions to access them while performing the operations
There are two types of memories (storage devices)
RAM (Random Access Memory)
ROM (Read Only Memory)
RAM (Random Access Memory)
RAM (Random Access Memory) is one of the storage devices which performs both read and write operations. But RAM is Volatile in nature it loses the data when there is no power supply. It is fast while programming when compared to ROM
There are two types of RAM
DRAM (Dynamic Random Access Memory)
SRAM ( Static Random Access Memory)
ROM (Read Only Memory)
Main advantage of ROM is that we can easily alter the data or reprogrammable. Advantage of ROM is Non –Volatile in nature which does not loses any data when there is no power supply. Motherboard may consist of more than one ROM chips.
Types of ROM
ROM- Read only Memory
PROM- Programmable Read only Memory
EPROM- Erasable Programmable Read only Memory
EEPROM- Electrically Erasable Programmable Read only Memory
Flash EEPROM memory
OPERATING SYSTEMS (OS)
Operating System is a type of software that allows computer hardware to communicate with software. A computer without OS is a mere machine
Ex: DOS (Disk Operating System), Linux, Solaris.
Types of operating systems
Graphical User Interface (GUI)
GUI is an interface, which allows us to interact with electronic devices like mobiles, gaming devices and Mp3 players using some graphical icons
Ex:Windows 98, Windows CE, System 7.X
Multi-user operating system
Application software which allows multiple users to access the computer with time sharing system
Ex: Linux, UNIX, Windows 2000
Multiprocessor operating system
An operating system which supports the utilization of two or more processors on single computer Ex: Linux, UNIX, Windows 2000
Multi-Tasking
An operating system which supports multiple processes at the time Ex: Unix, Windows 2000.
Central Processing Unit (CPU)
Central Processing Unit is also called as the “Brain of the Computer” or Main Processor which controls all the systems inner functions.
It is very easy to replace because it is inserted into the socket and is not soldered onto the motherboard
A computer may contain more than one CPU which is nothing but MULTIPROCESSING
Two main parts of CPU are
Arithmetic Logic Unit (ALU)
Control Unit (CU).
Arithmetic Logic Unit (ALU): ALU is also called as basic building blocks of Central Processing Unit, which performs all arithmetic and logical operations like addition, subtraction, multiplication and division
Control Unit (CU): Control Unit controls the entire processing. It helps in the communication between Memory and ALU
A place where we can store the data or set of instructions to access them while performing the operations
There are two types of memories (storage devices)
RAM (Random Access Memory)
ROM (Read Only Memory)
RAM (Random Access Memory)
RAM (Random Access Memory) is one of the storage devices which performs both read and write operations. But RAM is Volatile in nature it loses the data when there is no power supply. It is fast while programming when compared to ROM
There are two types of RAM
DRAM (Dynamic Random Access Memory)
SRAM ( Static Random Access Memory)
ROM (Read Only Memory)
Main advantage of ROM is that we can easily alter the data or reprogrammable. Advantage of ROM is Non –Volatile in nature which does not loses any data when there is no power supply. Motherboard may consist of more than one ROM chips.
Types of ROM
ROM- Read only Memory
PROM- Programmable Read only Memory
EPROM- Erasable Programmable Read only Memory
EEPROM- Electrically Erasable Programmable Read only Memory
Flash EEPROM memory
OPERATING SYSTEMS (OS)
Operating System is a type of software that allows computer hardware to communicate with software. A computer without OS is a mere machine
Ex: DOS (Disk Operating System), Linux, Solaris.
Types of operating systems
Graphical User Interface (GUI)
GUI is an interface, which allows us to interact with electronic devices like mobiles, gaming devices and Mp3 players using some graphical icons
Ex:Windows 98, Windows CE, System 7.X
Multi-user operating system
Application software which allows multiple users to access the computer with time sharing system
Ex: Linux, UNIX, Windows 2000
Multiprocessor operating system
An operating system which supports the utilization of two or more processors on single computer Ex: Linux, UNIX, Windows 2000
Multi-Tasking
An operating system which supports multiple processes at the time Ex: Unix, Windows 2000.
Anil Aggarwal
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