BCIS FINAL Flashcards
Binary
uses only two digits, 1 and 0, is commonly used for representing values in computers.
Bits
short for binary digit—is a digit that can be 1 or 0. A bit is the smallest unit of information that a digital electronics device can manipulate
Bytes
A group of eight bits
Computer fluency
refers to a functional understanding of the fundamentals of computers and their uses.
Digital literacy
refers to an understanding of how computers represent different types of data with digits and how the usefulness of that representation assists people in leading productive lives.
Embedded systems
are hardwired into a computer component, such as ROM or flash memory, to control a special-purpose computer.
IoT
refers to the ability of physical objects to communicate over the Internet using embedded computing devices. (unit 3-1.8)
Mobile computer
ex. cell phones
Personal computer
or PC , is any general-purpose computer designed to meet the many computing needs of one individual.
Technology ecosystem
a family of devices and software designed by the manufacturer to work together.
Types of computers (not brands)
General purpose- designed to carry out a wide variety of activities, depending on the software being used. General-purpose computers include personal computers (PCs), mobile computers, servers, and supercomputers
Special purpose- designed for a specific computing purpose. Game devices, digital music players, digital cameras, GPS navigators, digital thermostats and other smart appliances, and a host of industry-specific devices, such as pacemakers, airport security scanners, and bank ATMs, are all special-purpose computers
Wearables
are clothing and accessories that incorporate digital technologies.
ALU
Contains the millions of circuits created to carry out instructions, such as mathematical and logical operations
BYOD
(for “bring your own device”), workers who have fallen in love with their iPhones, iPads, and MacBooks at home are bringing them to work and pressuring employers to support Apple products at work
Cache
A temporary storage area for frequently accessed or recently accessed data; speeds up the operation of the computer; size measured in megabytes (MB)
Cloud storage
stores data on Internet servers for access from any Internet-connected device.
CPU
a group of circuits that perform the processing in a computer, typically in one integrated circuit called a microprocessor.
Input devices
assists in capturing and entering data into a computer system.
Motherboard
the primary circuit board of a computer to which all components are connected, including the CPU.
Output devices
allows a user to observe the results of computer processing with one or more senses.
Processor
carries out the instructions provided by software, using specially designed circuitry and a well-defined routine to transform data into useful outputs.
Resolution
A printer’s output resolution depends on the number of dots printed per inch. A printer with a 600 dots-per-inch (dpi) resolution prints more clearly than one with a 300-dpi resolution
ROM vs. RAM
ROM- provides permanent storage for data and instructions that do not change, such as firmware—programs and data from the computer manufacturer, including the boot process used to start the computer. ROM stores data, using circuits with states that are fixed
RAM- Random access memory (RAM) is temporary, or volatile, memory that stores bytes of data and program instructions for the processor to access. RAM acts as the primary storage area in a computer for software and the data that it works with. RAM plays a crucial role in computer systems and can contribute to or detract from a computer’s performance
Storage: Solid state vs. Optical vs. Magnetic
Solid state- device stores data using solid-state electronics such as transistors and, unlike magnetic and optical media, does not require any moving mechanical parts.
Optical state- media is convenient in terms of mobility but has limited storage capacity and is slow to write to.
Magnetic state- devices have high capacity and are convenient in terms of read and write ability, but they have slow data access rates due to the use of mechanical moving parts.
Types of printers
Laser printer
A laser printer uses techniques similar to those of photocopiers to provide the highest-quality printed output. Color laser printers can be rather expensive, so many home users settle for either a less expensive black and white laser or a color ink-jet printer.
Ink- jet printer
An ink-jet printer sprays droplets from ink cartridges onto paper to create pixels. Although ink-jet printers create good-looking hard copy, it is not quite as polished as what laser printers provide. Also, ink may run if it gets wet, so use care when printing addresses onto envelopes and hope they aren’t delivered on a rainy day.
Photo printer
A photo printer is an ink-jet printer that is specially designed for printing photo-quality images on special photo-quality paper. Cameras can be connected directly to the printer and sometimes photos can be previewed and edited from the printer’s display.
Large format printer
Also called a plotter, this is a type of printer used for printing large graphics designs. Businesses typically use plotters to generate paper or acetate blueprints and schematics or to print drawings of buildings or new products on paper or transparencies.
USB
An external hardware interface that enables you to connect to a USB device as a plug and play device.
Acquiring new software
refers to the several methods by which software can be purchased or accessed, including packaged software, downloaded software, cloud apps, and custom designed software.
Application software
consist of programs written to perform tasks or solve problems for people, groups, and organizations on PCs, mobile devices, and wearables.
Collaborative software
a comprehensive communication environment that helps the information on a project to flow within, to, and from an organization; also called groupware
Copyright
the legal right to copy, distribute, modify, and sell an original work; creator of the work owns the copyright
Executable file
file that can be transported safely
Mobile operating system
are lightweight versions of their PC equivalents. They require fewer system resources, and so can run on smaller processors with less storage and provide a streamlined user interface for smaller touchscreens
Open- source
Linux is a free, open-source operating system for PCs, servers, and other types of computers
Operating system
a set of computer programs that runs or controls the computer hardware and acts as a user interface.
Personal information management software
assist people in managing their personal lives, including their contacts, calendar, to-do list, health, and money.
Software
refers to the electronic instructions that govern a computer’s actions in order to provide a computing service.
Software license
defines the permissions, rights, and restrictions assigned to the person who purchases a copy of software.
Software suite
a collection of applications sold together as a package. Office suites typically include word processors, spreadsheets, and presentation software, and they sometimes include database-management systems, personal information managers, and other applications (see the table below).
System software
is any software that coordinates the activities of the hardware and assists the computer in functioning safely, effectively, and efficiently.
User interface
A user interface (UI) allows one or more people to have access to and command of a computer system or computer software.
VM
also referred to as virtualization software, allows one operating system to run on top of another by creating a virtual machine on which the guest operating system can run.
Advantages and disadvantages of cloud-based services
Advantages: The beauty of cloud computing is that users access services from their own computers or mobile devices but don’t have to be concerned with installation, maintenance, or security.
Disadvantages: Many cloud services are only accessible when the user is connected to the Internet. So, business travelers with intermittent Internet access could suffer. However, the amount of time anyone spends without Internet access is becoming less and less, and cloud service suppliers are working to support work offline. Another issue has to do with lack of control over the data. Some worry that cloud service companies will not adequately secure their data. They may also fear that sensitive information stored in the cloud could be subject to snooping eyes. In fact, government agencies have declined some cloud services because they do not meet government regulations for privacy and security.
Cascading style sheets
allows easy application of visual styles for fonts, colors, layouts, and other page attributes to create visual themes for webpages and sites. (unit 3-2.5)
Cloud computing models
serve various environments, including private clouds, community clouds, public clouds, and hybrid clouds. (unit 3-3.2)
Cookies
sometimes called an HTTP cookie, is a small text file placed on a user’s computer by a web server in order to identify the user whenever he or she returns to visit a website. (unit 3-2.7)
Digital divide
refers to the social and economic gap between those who have access to computers and the Internet and those who do not. (unit 2-6)
Domain name
maintains a database of all domain names and IP addresses used on the Internet and acts like a phonebook, supplying information to Internet nodes and routers working to get data packets to their destination. (unit 3-1.4)