WHAT IS COMPUTER Flashcards
(107 cards)
1
Q
- is an internal circuitry, detects this signal and determines which key was pressed based on its location.
A
Microcontroller
1
Q
sent signal to the computer processor, which then figures out which key was pressed.
A
Microcontroller
1
Q
interprets this signal and displays the corresponding character on the screen, or performs a specific action, like opening a program or copying text.
A
computer’s software
1
Q
- A computer is an electronic device that can??? according to a set of instructions
A
store, manipulate, and process data
1
Q
COMPUTER MEANS?
A
-Common Operating Machine Purposely Used for Technological and Educational Research.”
2
Q
THE TERM COMPUTER DERIVED FROM THE WHAT WORD???
A
LATIN WORD COMPUTARE MEANS TO CALCULATE
3
Q
10 Different Definitions of a Computer
A
- ELECTRONIC DEVICE
- DATA PROCESSOR
- INFORMATION
- DIGITAL DEVICE
- UNIVERSAL MACHINE
- COMMUNICATION TOOL
- PROBLEM SOLVER
- MULTIFUNCTIONAL DEVICE
- INFORMATION PROCESSOR
- AUTOMATION TOOL
4
Q
is the power of a computer as it can perform more than ONE task at a time and that too with perfection.
A
Multi-functionality
5
Q
COMPUTER IS ALSO KNOWN AS
A
UNIVERSAL MACHINE
6
Q
Features of Computer
A
- processing power
- storgae capacity
- memory (ram)
- input devices
- output data
- upgradability
- portability
- user interface
- secuirty features
- power management
6
Q
CHARACTERISTICS OF COMPUTER
A
- Saves Time
- Internet
- Storage
- Entertainment
- Organized data
- Helps the physically cahnged
7
Q
Computers can execute instructions and perform calculations quickly.
A
Processing Power:
8
Q
: They can store vast amounts of data, from documents to multimedia files.
A
Storage Capacity
9
Q
): Temporary storage used for actively running programs and processes.
A
Memory (RAM
10
Q
Keyboards, mouse, and other peripherals allow users to input data.
A
Input Devices:
11
Q
: Monitors, printers, and speakers display or produce results.
A
Output Data
12
Q
: Components like RAM, storage, and graphics cards can be upgraded.
.
A
Upgradability
13
Q
: Laptops and tablets offer mobility compared to desktop computers.
A
Portability
14
Q
: Graphical user interfaces (GUIs) or command-line interfaces for interaction
A
User Interface
15
Q
: Passwords, firewalls, and antivirus tools protect against unauthorized access.
A
Security Features
16
Q
: Features to optimize energy consumption
A
Power Management
17
Q
- The history of computers can be traced back to the??
A
ancient Greeks,
18
Q
ancient greeks used the ??? to perform simple calculations.
A
abacus
19
Q
invented the mechanical calculator in 17th century which could perform more complex calculations.
A
Blaise Pascal
20
designed the Analytical Engine in 19th cent
Charles Babbage
21
is the first general-purpose computer.
Analytical Engine,
22
Different Types of Computers Based on Its Size
1. micro computers
2. mini computers
3. mainframe computers
4. supercomputer
5. workstations
23
- are small, affordable computers for personal use. Examples include desktops and laptops. They handle everyday tasks like browsing, word processing, and entertainment.
Micro Computers
24
- are mainly single-user computers and have comparatively lesser storage and speed than other computers.
Micro Computers
25
- The first microcomputer was built with??? chips as these computers use microprocessors as CPU.
8-bit microprocessor
26
- are mid-sized computers or mid-range computers more powerful than personal computers but smaller than mainframes.
Mini-computers
27
are not designed for single users and it is a powerful computers used by large organizations for critical applications and data processing
Mainframe Computers-
27
They handle complex tasks for businesses and institutions, offering moderate processing capabilities.
Mini-computers
28
are fastest type high-performance machines used for complex calculations, simulations, and scientific research.
Supercomputer-
29
- are advanced computers used for graphics, engineering, and scientific applications.
workstations
30
Different Types of Computers Based on Data Handling Capacity
1. Analog Comp
2. Digital Comp
3. Hybrid Comp
31
- use continuous physical quantities to represent data and perform calculations
Analog Computers
32
are used at places where we have approximate values e.g., speed, temperature, pressure, etc.
Analog computers
33
- process information using discrete elements (bits) represented as 0s and 1s. They perform calculations through logical operations, enabling versatile tasks and precise results.
Digital Computers
34
- combine features of both analog and digital computers. .
Hybrid Computers
35
They use analog for continuous data and digital for precise calculations, offering versatility across various applications
Hybrid Computers
36
two main components of comp
hardware and software.
37
Different Components of a Computer
1. CPU or (Central Processing Unit)
2. Computer Memory-
3. Arithmetic Logic Unit
4. Input Devices of Computer
5. Output Devices of Computer
6. Motherboard
38
is the brain of a computer, executing instructions and performing calculations to run software and process data for overall system functionality.
CPU or (Central Processing Unit)-
39
stores data for the computer to use. RAM (Random Access Memory) is for temporary storage, and storage devices like hard drives store data permanently.
Computer Memory-
39
provides fast but volatile storage.
- Random Access Memory (RAM)
40
offers non-volatile, long-term storage for programs and files.
Solid-State Drive (SSD)
41
- key component of a computer’s central processor unit. A computer performs mathematical and logical operations, like addition and comparison, enabling the CPU to execute tasks and make decisions.
Arithmetic Logic Unit
42
enable users to interact with the computer. Common computer input devices include keyboards for trying, mice for pointing and clicking, touchscreens for direct interaction, and microphones for voice input.
Input Devices of Computer-
43
- transmit processed information to users.
It include monitors for displaying information, printers for producing hard copies, speakers for audio output, and projectors for larger visual displays.
Output Devices of Computer
44
- is a computer’s main circuit board, connecting and facilitating communication between components like CPU, RAM, and Peripherals. It provides the foundation for the system to foundation for the system to function.
Motherboard
45
- Father of Computers
charles babbage
46
- First Computer Programmer was
Lady Augusta Ada Lovelace,
47
who wrote the first algorithm for Charles Babbage’s Analytical Engine in the 1840s.
Lady Augusta Ada Lovelace,
48
in the context of computer glickes originated in 1947 when a moth caused a malfunction in the Harvard Mark II computer.
“Bug”
48
- First Computer Mouse was invented in 1964 by?? and was made of wood.
Douglas Engelbart
49
- “Byte” was coined in 1956 by ??? while working on IBM’s Stretch computer
Dr. Werner Buchholz
50
- weighed around 30 tons and used more than 17,000 vacuum.
First Tube Electronic Computer, ,
51
ENIAC means
Electronic Numerical Integrator And Computer
52
5 Major Functions
Numeric Keypad
9-special keys
Function keys
Cursor OR Arrow Keys
Alphanumeric Character
53
Alphanumeric keys
Numbers
Letters
Symbols
Punctuations
Special keys
54
9 special keys
Print Screen
Scroll lock
Pause/Break
Insert
Delete
Home
End
Page up
Page Down
55
- also known as the number pad or numpad, is the section of keys on the right side of the keyboard
numeric keypad,
55
is used in combination with other keys to provide keyboard shortcuts.
Ctrl Key-
55
- They allow you to produce capital letters and access alternative keyboard functions and keyboard shortcuts.
modifier
56
- is also used in combination with other keys to activate menu options without using a mouse
Alternate (ALT) Key
56
modifier keys.
- Keys like Ctrl, Alt, and Shift
57
- is used to cancel or exit from the current task or dialog box
Esc Key
58
are used to perform special functions in some applications and operating systems
Function Keys F1 to F12-
59
- is one of the modifier keys found on most computer keyboards that allows you to enter uppercase characters or do other “shifted” functions.
Shift Key
60
- close a single tab
CTRL+ W-
61
-- close a browser window entirely
CTRL+SHIFT+W
62
- to open the File menu
ALT+F-
63
- -to open Edit
ALT+E
64
- to switch between open windows
-
ALT+TAB
65
- to close the active window
ALT+F4
66
to insert the copyright symbol ©
-
- ALT+0169
66
- to open web links in a new browser tab
-
ALT+ENTER
66
- to cycle through items in the order they were opened
ALT+ESC
67
-- to insert the trademark symbol TM
ALT+0153
68
- to insert the em dash —
ALT+0151
69
is typically used to access Help options in many applications and operating systems.
F1 key
70
is commonly used to rename selected files or folders.
F2 key
71
usually activates a search function within an application or file browser.
F3 key
72
is often used to open a new document or tab or to select an existing tab in applications like word processors, spreadsheets, and web browsers.
F4 key
73
typically refreshes or reloads the active window.
F5 key
74
usually activates the spelling checker in word-processing applications. It can also toggle special modes in some software, such as full-screen view.
F7 key
75
often activates keyboard shortcuts or hotkeys in applications and games. It may also be used to toggle between the normal cursor and a resize cursor in some graphics software.
F8 key
75
typically activates menus relating to saving files or settings.
F9 key
76
activates the menu bar in most applications and browsers, allowing you to navigate through options using the arrow keys.
F10 key
77
toggles full-screen mode on and off in applications like web browsers, word processors, and media players.
F11 key
78
opens the Developer Tools menu in most web browsers. In some applications, like word processors, it may toggle additional toolbars and panes.
F12 key
79
move the cursor up and down by full pages.
Page Up and Page Down
80
-moves it to the end of the line.
End Key
81
allow you to control audio and video playback without having to open any media player.
Media keys
81
- The most common media keys are
Play/Pause, Stop, Previous Track, Next Track, and Volume Up/Down.
82
window keys is located
between the Ctrl and Alt keys.
82
- is an important key on your keyboard that provides quick access to various Windows features.
Windows key
83
* minimizes all windows and shows the desktop
Windows key + D
84
locks your PC
* Windows key + L
85
opens the Run dialog box to run commands
Windows key + R
86
opens the Quick Link menu with admin
Windows key + X
87
opens File Explorer
*Windows Key + E
88
will open the Settings app
Windows key + I
89
opens Cortana search
Windows key + S
90
ctrl + L
left align
90
ctrl + r
right align
