Computer Basics
A computer is a complex electronic device designed to perform various tasks by executing a set of
instructions or programs. It consists of both hardware and software components that work together to
process information.
Input
The 3 major functions of the input unit are-
Take the data to be processed by the user.
Convert the given data into machine-readable form.
And then, transmit the converted data into the main memory of the computer.
The sole purpose is to connect the user and the computer. In addition, this
creates easy communication between them.
CPU – Central Processing Unit
, Central Processing Unit or the CPU, is the brain of the computer. It works the same
way a human brain works. As the brain controls all human activities, similarly the
CPU controls all the tasks.
Moreover, the CPU conducts all the arithmetical and logical operations in the
computer.
Now the CPU comprises of two units, namely – ALU (Arithmetic Logic Unit) and CU
(Control Unit). Both of these units work in sync. The CPU processes the data as a
whole.
ALU – Arithmetic Logic Unit
The Arithmetic Logic Unit is made of two terms, arithmetic and logic. There are two
primary functions that this unit performs.
1. Data is inserted through the input unit into the primary memory. Performs the
basic arithmetical operation on it. Like addition, subtraction, multiplication,
and division. It performs all sorts of calculations required on the data. Then
sends back data to the storage.
2. The unit is also responsible for performing logical operations like AND, OR,
Equal to, Less than, etc. In addition to this it conducts merging, sorting, and
selection of the given data.
CU – Control Unit
The control unit as the name suggests is the controller of all the activities/tasks and
operations. All this is performed inside the computer.
The memory unit sends a set of instructions to the control unit. Then the control unit
in turn converts those instructions. After that these instructions are converted to
control signals.
These control signals help in prioritizing and scheduling activities. Thus, the control
unit coordinates the tasks inside the computer in sync with the input and output units.
Memory Unit
A computer is a complex electronic device designed to perform various tasks by executing a set of
instructions or programs. It consists of both hardware and software components that work together to
process information.
Input
The 3 major functions of the input unit are-
Take the data to be processed by the user.
Convert the given data into machine-readable form.
And then, transmit the converted data into the main memory of the computer.
The sole purpose is to connect the user and the computer. In addition, this
creates easy communication between them.
CPU – Central Processing Unit
, Central Processing Unit or the CPU, is the brain of the computer. It works the same
way a human brain works. As the brain controls all human activities, similarly the
CPU controls all the tasks.
Moreover, the CPU conducts all the arithmetical and logical operations in the
computer.
Now the CPU comprises of two units, namely – ALU (Arithmetic Logic Unit) and CU
(Control Unit). Both of these units work in sync. The CPU processes the data as a
whole.
ALU – Arithmetic Logic Unit
The Arithmetic Logic Unit is made of two terms, arithmetic and logic. There are two
primary functions that this unit performs.
1. Data is inserted through the input unit into the primary memory. Performs the
basic arithmetical operation on it. Like addition, subtraction, multiplication,
and division. It performs all sorts of calculations required on the data. Then
sends back data to the storage.
2. The unit is also responsible for performing logical operations like AND, OR,
Equal to, Less than, etc. In addition to this it conducts merging, sorting, and
selection of the given data.
CU – Control Unit
The control unit as the name suggests is the controller of all the activities/tasks and
operations. All this is performed inside the computer.
The memory unit sends a set of instructions to the control unit. Then the control unit
in turn converts those instructions. After that these instructions are converted to
control signals.
These control signals help in prioritizing and scheduling activities. Thus, the control
unit coordinates the tasks inside the computer in sync with the input and output units.
Memory Unit
