Cs100 module 1 prelims (pt 1) Flashcards by John Cedrick Magpantay

a machine that allows a user to
perform calculations or
computations.

Computers

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What makes a computer a computer?

Input
Output
Processing
Storage
Programmability

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Receives data

Input

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Displays or produces information

Output

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Manipulates data

Processing

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Saves data for later use

Storage

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can be instructed to perform tasks

Programmability

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What are computers in academic use?

To check Learning Management
Systems (Blackboard Learn)
To read reference material
To communicate with peers or
mentors
To write academic or scholarly
materials

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Computers in
Professional Use

-Use spreadsheet for budget
tracking + performing other
heavy-duty computations
-Transfer information from one
location to another
-Conduct virtual meetings with
clients and other stakeholders

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Computers in Society

Weather Forecasting
Banking and Finance
Accessing Information
Job Search
Entertainment / Gaming
Accessibility for PWD
Healthcare and Public Safety
Others

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History of Computers

Ancient and Classical Era
The 19th Century
The 20th Century and Now

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Ancient and Classical Era

The Abacus, Sumer (ca. 2700 – 2300 BC)
The Abacus, China (ca. 1050 – 771 BC)
The Antikythera Mechanism, Greece (ca. 100 BC)

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The 19th Century

The Analytical Engine, Babbage & Lovelace (1837), Swade (2002)
Arithmometer, Payen (1887)

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The 20th Century and Now

Electronic Numerical Integrator and Computer (ENIAC), Beck & Snyder, 1945
Universal Automatic Computer (UNIVAC), Eckert & Mauchly, 1951
Age of Transistors, 1950s
Age of Integrated Circuits, 1960s
Age of Microprocessors, 1970s
Apple II Computer, Apple, Inc., Jobs & Wozniak, 1978
Age of Personal and Ubiquitous Computers 1980s – 2020s
Age of Quantum Computers, 2030s

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Who observed Moore’s law?

Gordon Moore

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What is Moore’s law

It states that Number of transistors on a microchip doubles roughly every two years

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ISSUES IN COMPUTING

Digital divide
Cybercrime
Data Privacy Violations

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Is the act of effective use of digital tools and resources.

Digital Literacy

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Being digitally literate makes you a __________

Digital Citizen

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Critically evaluating digital information and media.

Digital literacy

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Observing safe and responsible online behavior.

Digital literacy

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despite how progressive society is, there are areas that are being left out

Digital divide

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This results in slow progress, overall leaving a sector / community behind everyone else

Digital divide

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Digital divide factors/Barriers

Geographical
Political
Economic
Educational

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Its impossible to supply power into some areas in the philippines due to their remote location

Geographical

Democratic people's republic of korea restricts internet access and computer use to privileged individuals

Political

Some people can't afford to purchase computers or have decent internet access

Economic

Some cannot even read nor write, what more of using a computer

Educational

An act of protecting computer systems and networks from digital attacks.

Cybersecurity

Safeguarding confidential data from unauthorized access, use, disclosure, disruption, modification, or destruction

Cybersecurity

Implementing security measures to reduce risks and vulnerabilities.

Cybersecurity

Ensuring business continuity and resilience against cyber threats.

Cybersecurity

are online or computer-based illegal actions.

Cybercrimes

This includes actions such as hacking, identity theft, and spreading malware to steal data or disrupt systems, to name a few.

Cybercrimes

Protection of personal information from unauthorized access.

Data Privacy

Individuals control how their data is collected, used, and shared

Data Privacy

occurs when personal information is collected, used, or disclosed without proper authorization or consent.

A data privacy violation

Computer communications describes a process in which two or more computers or devices transfer data, instructions, and information

Communications

allows users to send and receive short text messages on a phone or other mobile device or computer

Text messaging

Sms meaning?

Short message service

allows users to send pictures and sound files

picture messaging

allows users to send short video clips Wireless instant messaging allows wireless users to exchange real-time messages with one or more other users

Video messaging

allow people to connect wirelessly to the Internet from home, work, school, and in many public locations

Wireless Internet access points

is a coffeehouse, restaurant, or other location that provides personal computers with Internet access to its customer

cybercafé

is a navigation system that consists of one or more earth-based receivers that accept and analyze signals sent by satellites in order to determine the GPS receiver’s geographic location

global positioning system

Gps meaning?

Global positioning system

Helps groups of people work together on projects and share information over a network

Groupware

Component of workgroup computing

Groupware

Allows someone to leave a voice message for one or more people

Voice mail

includes tools that enable users to share documents via online meetings and communicate with other connected users

Collaboration software

tools of collaboration software? (3)

>Online meetings >Web conferences >Document Management systems

enable programmers to create applications that communicate with other remote computers over the Internet or on an internal business network

Web services

a Web application that combines services from two or more sources

mashup

is a collection of computers and devices connected together via communications devices and transmission media

network

is a network that connects computers and devices in a limited geographical area

local area network

LAN meanign?

Local area network

is a LAN that uses no physical wires

wireless LAN

WLAN meaning

Wireless LAN

MAN meaning?

Metropolitan area network

connects LANs in a metropolitan area

metropolitan area network

is a network that covers a large geographical area

A wide area network

WAN meaning?

Wide area network

The design of computers, devices, and media on a network

Network architecture

describes an Internet network on which users access each other’s hard disks and exchange files directly over the Internet

P2P

types of network architecture:

Client/server network Peer to peer network

refers to the layout of the computers and devices in a communications network

network topology

types of network topology

Star network bus network ring network

is an internal network that uses Internet technologies

intranet

allows customers or suppliers to access part of its intranet

extranet

is a network standard that specifies no computer controls when data can be transmitted

Ethernet

standard specifies that computers and devices on the network share or pass a special signal (token)

The token ring

is a network standard that defines how messages are routed from one end of a network to another

TCP/IP

TCP/IP meaning?

Transmission control protocol/internet protocol

https meaning?

Hypertext transfer protocol secure

identifies any network based on the 802.11 standard that facilitates wireless communication

Wi-Fi

defines how two Bluetooth devices use short-range radio waves to transmit data

Bluetooth

specifies how two UWB devices use short-range radio waves to communicate at high speeds

UWB

UWB meaning?

(ultra-wideband)

transmits data wirelessly via infrared (IR) light waves

IrDA

IrDA?

infrared data association

uses radio signals to communicate with a tag placed in or attached to an object, animal, or person

RFID

RFID?

Radio Frequency Identification

Developed by IEEE * Towers can cover a 30-mile radius * Two types are fixed wireless and mobile wireless * Provides wireless broadband Internet access

WiMAX (802.16)

WiMax?

Worldwide Interoperability for Microwave Access

Specifies how some mobile devices can display the content of Internet services

Wireless Application Protocol

(WAP)?

Wireless Application Protocol

consists of programs that: >Help users establish a connection to another computer or network >Manage the transmission of data, instructions, and information >Provide an interface for users to communicate with one another

Communications software

is the worldwide telephone system

PSTN

public switched telephone network

connections transmit data downstream at a much faster rate than upstream

ADSL

ADSL?

Asymmetric Digital Subscriber Line

is any type of hardware capable of transmitting data, instructions, and information between a sending device and a receiving device

communications device

converts signals between analog and digital

dial-up modem

sends and receives data and information to and from a digital line

digital modem

uses the cell phone network to connect to the Internet wirelessly from a notebook computer, a smart phone, or other mobile device

wireless modem

enables a computer or device to access a network

network card

is a central communications device that allows computers and devices to transfer data wirelessly among themselves or to a wired network

wireless access point

connects multiple computers or other routers together and transmits data to its correct destination on a network

router

connects several devices in a network together

hub or switch

Types of wired home networks:

Ethernet Powerline cable Phoneline

The amount of data that can travel over a communications channel sometimes

Bandwidth

is the time it takes a signal to travel from one location to another on a network

Latency

carries one or more signals

Transmission media

transmit multiple signals simultaneously

Broadband media

is a form of broadcast radio that is used widely for mobile communications

Cellular radio

are radio waves that provide a high-speed signal transmission

Microwaves

is a space station that receives microwave signals from an earth-based station, amplifies it, and broadcasts the signal over a wide area

communications satellite

Wi-fi

Wireless fidelity