Q:2 Define computers and give classifications of computers.
A computer is an electronic device that processes data to perform tasks according to
instructions.
Computers can be classified based on their size, functionality, and usage. Common
classifications include:
1. Supercomputers: High-performance machines designed for complex scientific
calculations.
2. Mainframes: Large-scale computers used for centralized data processing in
organizations.
3. Minicomputers: Smaller than mainframes but more powerful than personal
computers, often used for specific tasks.
4. Personal Computers (PCs): Designed for individual use and come in various forms,
such as desktops, laptops, and tablets.
5. Servers: Specialized computers that provide services or resources to other computers
in a network.
6. Embedded Computers: Integrated into everyday devices and systems, like household
appliances or automobiles.
7. Workstations: Powerful computers optimized for graphics and scientific applications.
These classifications highlight the diversity of computers and their applications across
different domains.
Q:3 What is an operating system? Explain anyone?
An operating system (OS) is software that manages computer hardware and provides
services for computer programs. It is an intermediary between the user and the computer
hardware, facilitating communication and resource allocation.
One example is Microsoft Windows. It provides a graphical user interface, and file
management, and supports various applications. Windows manages hardware resources,
such as memory and processing power, allowing users to interact with their computers
effectively.
Q:4 What is C.P.U?Also, explain C.U.A.L.U and the primary storage unit.
A CPU, or Central Processing Unit, is a computer's core component responsible for
executing instructions for a computer program.
CU (Control Unit) manages the execution of instructions and coordinating activities within
the CPU.
, ALU (Arithmetic Logic Unit) performs arithmetic and logical operations, essential for
processing data.
The Primary Storage Unit, commonly RAM (Random Access Memory), stores data
temporarily for quick access by the CPU during operation.
Q:5 What is the difference between a chain printer and a drum printer?
Chain and drum printers are impact printers, but they differ in their mechanisms. A chain
printer uses a rotating chain of characters to strike the paper, while a drum printer
engraves characters on a drum that revolves against the paper. Chain printers are known
for speed, but drum printers tend to be quieter and more reliable.
Q:6 What is the assembly language?
Assembly language is a low-level programming language closely corresponding to a
computer's architecture. It uses symbolic representations of machine code instructions,
making it more readable than raw binary code. Programmers use assembly language to
write programs that can be translated into machine code for execution by a computer's
central processing unit (CPU).
Q:7 Define Relational Operations?
Relational operations are actions performed on relational databases to manipulate data.
Common operations include selecting specific rows (SELECT), inserting new data
(INSERT), updating existing data (UPDATE), and deleting data (DELETE). These
operations are crucial for managing and querying databases effectively.
Q:8 Convert the following according to their base.
1.(1110100)2 = (?)10
1110100=> 64+32+16+4=(116)10
2.(FBA)16=(?)2
{F=1111}
{B=1011}=>(111110111010)2
{A=1010}
3.(BBC)16=(?)2
{B=1011}
{B=1011}=>(101110111100)2
{C=1100}
4.(1101111)2+(00111001)2
1101111+00111001=(10101000)2
5.(7260)8+(4220)8
A computer is an electronic device that processes data to perform tasks according to
instructions.
Computers can be classified based on their size, functionality, and usage. Common
classifications include:
1. Supercomputers: High-performance machines designed for complex scientific
calculations.
2. Mainframes: Large-scale computers used for centralized data processing in
organizations.
3. Minicomputers: Smaller than mainframes but more powerful than personal
computers, often used for specific tasks.
4. Personal Computers (PCs): Designed for individual use and come in various forms,
such as desktops, laptops, and tablets.
5. Servers: Specialized computers that provide services or resources to other computers
in a network.
6. Embedded Computers: Integrated into everyday devices and systems, like household
appliances or automobiles.
7. Workstations: Powerful computers optimized for graphics and scientific applications.
These classifications highlight the diversity of computers and their applications across
different domains.
Q:3 What is an operating system? Explain anyone?
An operating system (OS) is software that manages computer hardware and provides
services for computer programs. It is an intermediary between the user and the computer
hardware, facilitating communication and resource allocation.
One example is Microsoft Windows. It provides a graphical user interface, and file
management, and supports various applications. Windows manages hardware resources,
such as memory and processing power, allowing users to interact with their computers
effectively.
Q:4 What is C.P.U?Also, explain C.U.A.L.U and the primary storage unit.
A CPU, or Central Processing Unit, is a computer's core component responsible for
executing instructions for a computer program.
CU (Control Unit) manages the execution of instructions and coordinating activities within
the CPU.
, ALU (Arithmetic Logic Unit) performs arithmetic and logical operations, essential for
processing data.
The Primary Storage Unit, commonly RAM (Random Access Memory), stores data
temporarily for quick access by the CPU during operation.
Q:5 What is the difference between a chain printer and a drum printer?
Chain and drum printers are impact printers, but they differ in their mechanisms. A chain
printer uses a rotating chain of characters to strike the paper, while a drum printer
engraves characters on a drum that revolves against the paper. Chain printers are known
for speed, but drum printers tend to be quieter and more reliable.
Q:6 What is the assembly language?
Assembly language is a low-level programming language closely corresponding to a
computer's architecture. It uses symbolic representations of machine code instructions,
making it more readable than raw binary code. Programmers use assembly language to
write programs that can be translated into machine code for execution by a computer's
central processing unit (CPU).
Q:7 Define Relational Operations?
Relational operations are actions performed on relational databases to manipulate data.
Common operations include selecting specific rows (SELECT), inserting new data
(INSERT), updating existing data (UPDATE), and deleting data (DELETE). These
operations are crucial for managing and querying databases effectively.
Q:8 Convert the following according to their base.
1.(1110100)2 = (?)10
1110100=> 64+32+16+4=(116)10
2.(FBA)16=(?)2
{F=1111}
{B=1011}=>(111110111010)2
{A=1010}
3.(BBC)16=(?)2
{B=1011}
{B=1011}=>(101110111100)2
{C=1100}
4.(1101111)2+(00111001)2
1101111+00111001=(10101000)2
5.(7260)8+(4220)8
