WorksheetsTHE ULTIMATE ITEC 101 MIDTERM REVIEWER
Total questions: 64
Worksheet time: 32mins
is one of the most important developments of the twentieth century
The invention of Electronic Computer
A computer that performs calculations and logical operations with quantities represented as digits, usually in the binary number system of “0” and “1”.
known as the first computer, it uses several rows of beads to represent numbers; each row stands for a place value and the arrangement of beads in a row stands for a digit
abacus
Young French Mathematician - Invented one of the first gear based adding machines (Pascaline Calculator, Mechanical Calculator, Adding Machine) to help with enormous amount of calculations involved in the computing of taxes
Ada Lovelace
Charles Babbage
English Mathematician - Unveiled the first phase of his envisioned. Difference engine which also used ten-position gears to represent decimal digits. (Computer, Difference Engine, Analytical Engine)
Ada Lovelace
Charles Babbage
One of the few people who understood the Analytical Engine’s enormous potential. - She described the similarity of Jacquard’s and Babbage’s inventions.
Ada Lovelace
Charles Babbage
Required physically moving and interconnected parts. Such a device is almost certain to be slower, more prone to failure, and more difficult to manufacture than a device that has no moving parts.
Mechanical Devices
Electronic Devices
such as vacuum tubes of the sort used in early radios have, by definition, no moving part
Mechanical Devices
Electronic Devices
IT includes the physical parts of a computer.
It is typically directed by the software to execute any command or instructions.
is the set of instructions that can be stored and run by hardware.
encloses most of the components of the system.
It provides mechanical support and protection for internal elements such as the motherboard, disk drives, and power supplies, and controls and directs the flow of cooling air over
Case
Power Supply
Monitor
Motherboard
converts alternating current (AC) electric power to low-voltage direct current (DC) power for the computer.
Central Processing Unit
Power Supply
Monitor
Motherboard
Displays the image or video information that is generated by the computer through Video or Graphics Card.
Central Processing Unit
Power Supply
Monitor
Motherboard
Is the main component of a computer. It is a board with integrated circuitry that connects the other parts of the computer including the CPU, the RAM, the disk drives (CD, DVD, hard disk, or any others) as well as any peripherals connected via the ports or the expansion slots.
Central Processing Unit
Power Supply
Monitor
Motherboard
It is the chips in a computer typically contains billions of tiny metal oxide semiconductior field effect transistors (MOSFETs).
Integrated Circuit (IC)
Central Processing Unit (CPU)
HDD (Hard Disk Drive)
Read Only Memory (ROM) -
it performs most of the calculations which enable a computer to function, and is referred to as the brain of the computer
Integrated Circuit (IC)
Central Processing Unit (CPU)
HDD (Hard Disk Drive)
Read Only Memory (ROM) -
It includes the north bridge and mediates communication between the CPU and the other components of the system
RAM
( random access memory )
It stores the code and data that are being actively accessed by the CPU.
RAM
( random access memory )
it stores the BIOS that runs when the computer is powered on or otherwise begins execution, a process known as Bootstrapping, or "booting" or "booting up.
ROM
( read only memory )
RAM
( random access memory )
HDD
( hard disk drive )
CPU
( Central processing unit )
Part of a computer that stores data ; Reads and writes datas on a computer.
HDD
( hard disk drive )
CPU
( central processing unit )
RAM
( random access memory )
Same as the HDD. Is a new generation of storage device used in a computer. Way much faster than HDD.
RAM
( random access memory )
SSD
( solid state drive )
It includes boot firmware and power management firmware.
Newer motherboards use Unified Extensible Firmware Interface (UEFI)
Basic Input Output System (BIOS)
Buses
Complementary MOS (CMOS)
Video Card/Graphics Card (GPU)
it connects the CPU to various internal components and to expand cards for graphics and sound.
Basic Input Output System (BIOS)
Buses
Complementary MOS (CMOS)
Video Card/Graphics Card (GPU)
it is what the battery is made of , which powers it for date and time in the BIOS chip.
This battery is generally a watch battery.
Basic Input Output System (BIOS)
Buses
Complementary MOS (CMOS)
Video Card/Graphics Card (GPU)
it processes computer graphics.
More powerful _____ are better suited to handle strenuous tasks, such as playing intensive video games or running computer graphics software.
Basic Input Output System (BIOS)
Buses
Complementary MOS (CMOS)
Video Card/Graphics Card (GPU)
it make up the voltage regulator module (VRM), which controls how much voltage other hardware components receive.
Power MOSFETs
Expansion Cards
Storage Devices
Data Storage
is a printed circuit board that can be inserted into an expansion slot of a computer motherboard or backplane to add functionality to a computer system via the expansion bus.
Power MOSFETs
Expansion Cards
Storage Devices
Data Storage
_______ is any computing hardware and digital media that is used for storing, porting and extracting data files and objects
Power MOSFETs
Expansion Cards
Storage Devices
Data Storage
the use of recording media to retain data using computers or other devices
Power MOSFETs
Expansion Cards
Storage Devices
Data Storage
Data is stored by a computer using a variety of media.
Stored in HDD or SDD
Fixed Media
Removable Media
To transfer data between computers, an external flash memory device (such as a memory card or USB flash drive) or optical disc (such as a CD-ROM, DVD-ROM or BD-ROM) may be used
Fixed Media
Removable Media
allows the user to enter information into the system, or control its operation.
input device
output device
any hardware device used to send data from a computer to another device or user. Usually, most output peripherals are meant for human use
input device
output device
Used to enter data into the computer using a set of keys.
Keying Devices
It contains three types of keys, alphanumeric keys, special keys, and function keys.
mouse
keyboard
monitor
mic
is a small device used to point to and select items on your computer screen. Mouse typically has two buttons, a primary button and secondary button.
a device that capture an object directly from the source.
are devices that reads data directly from source document and convey them as input in the form of electronic signal.
Document Readers
It reads data using magnectic ink. Uses principle of magnetism to sense data which have been written using magnetized ink.
Document Readers
Magnetic Readers
Scanners
Mouse
The first computer that has been invented. It occupied about 1,800 square feet
ENIAC
( Electronic Numerical Integrator and Computer )
it means " the duration computer system requires in fulfilling a task or completing an activity "
the level of precision which calculations are made and tasks are performed.
is the quality due to which the user can stay dependable on the computer. Computers systems are well-adjusted to do repetitive tasks
the quality of the computer to complete a different type of tasks : simple as well as complex.
Adaptability
is the ability of the computer to store data in itself for accessing it again in the future.
memory
LIMITATIONS OF COMPUTER SYSTEMS
They are unable to see and think the actions to perform in a particular situation unless that situation is already programmed into them. Computers are programmable to complete each and every task, however small it may be.
Zero Intelligence Quotient / Zero IQ
Lack of Decision-Making
LIMITATIONS OF COMPUTER SYSTEMS
is a complicated process involving information, knowledge, intelligence, wisdom, and ability to judge. The computer system does not have the ability to make decisions on their own because they do not possess all the essentials of decision-making.
Zero Intelligence Quotient / Zero IQ
Lack of Decision-Making
Are the most high performing system.
It is a computer with a high level of performance compared to a general-purpose computer.
Super Computers
Mainframe Computers
Mini Computers
Micro Computers
Commonly called as big iron. They are usually used by big organizations for bulk data processing such as statics, census data processing, and transaction processing
Super Computers
Mainframe Computers
Mini Computers
Micro Computers
much cheaper price than the main frames. Designed for control, instrumentation, human interaction, and communication.
Super Computers
Mainframe Computers
Mini Computers
Micro Computers
s small, relatively inexpensive computer with a microprocessor as its CPU.
Super Computers
Mainframe Computers
Mini Computers
Micro Computers
are nothing but dedicated computers which are set-up to offer some services to the clients.
They are named depending on the type of service they offered. Example: security server, database server.
Those are the computers designed to primarily to be used by single user at a time. They run multi-user operating systems. They are the ones which we use for our day to day personal / commercial work.
Servers
Information Appliances
Embedded Computers
Workstation
They are the portable devices which are designed to perform a limited set of tasks like basic calculations, playing multimedia, browsing internet etc. They are generally referred as the mobile devices.
Servers
Information Appliances
Embedded Computers
Workstation
They are the computing devices which are used in other machines to serve limited set of requirements.
Servers
Information Appliances
Embedded Computers
Workstation
is a form of computer that uses the continuously changeable aspects of physical fact such as electrical, mechanical, or hydraulic quantities to model the problem being solved.
A computer that processes both analog and digital data ; is a digital computer that accepts analog signals, converts them to digital and processes them in digital form.
Hybrid computer
Super computers
Analog computer
Digital computer
Are physical parts/ intangible parts of a computer.
eg Input devices, output devices, central processing unit and storage devices
also known as programs or applications.
They are classified into two classes namely - system software and application software
Operating System
Computer Software
Computer Hardware
is the computer user. Also known as the human ware.
The user commands the computer system to execute on instructions.
Live ware
Computer Software
Computer Hardware.
Embedded Computers -
C# - TypeScript - CSS - Java - PHP - Ruby - Python - Kotlin - JavaScript - Rust - HTML - Matlab - SQL - Swift - C++ - R
Are examples of
Windows Microsoft - Fedora - Linux - ChromeOS - MacOS Apple - Ubuntu - Android Google - Solaris - TempleOS - Haiku - HP-UX - MS-DOS
Are examples of
- Speaker - Speech Generating Device - Printer - Dot Matrix Printer - Headphones/Earphones - Sound Card - Projector - Digital Clock - Monitor - GPS Device
Are examples of
Output Devices
Input Devices
- Keyboard - Touchpad - Mouse - Barcode Reader - Microphone - Joystick - Router - Graphics Tablet - Webcam - Fingerprint Scanner
Are examples of
Output Devices
Input Devices
