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Flashy

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flash cards on stuff
B M0ds
Flashcards by B M0ds, updated more than 1 year ago
B M0ds
Created by B M0ds over 6 years ago
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Today’s IT infrastructure is composed of five major components computer hardware, computer software, data management technology, networking and telecommunications technology, technology services
System software manages the resources and activities of the computer.
Application software applies the computer to a specific task for an end user, such as processing an order or generating a mailing list.
Data management software organizes, manages, and processes business data concerned with inventory, customers, and vendors.
The principal storage technologies are magnetic disks, optical disc, magnetic tape, and storage networks.
magnetic disk A secondary storage medium in which data are stored by means of magnetized spots on a hard or floppy disk.
magnetic tape Inexpensive, older secondary- storage medium in which large volumes of information are stored sequentially by means of magnetized and non magnetized spots on tape
A USB flash drive provides portable flash memory storage by plugging into a computer’s USB port. It can provide up to 256 gigabytes of portable storage capacity and is small enough to fit into a pocket.
Optical Discs These discs use laser technology to store large quantities of data, including sound and images, in a highly compact form. They are available for both PCs and large computers.
CD- ROM ( compact disk read- only memory) Read- only optical disk storage used for imaging, reference, and database applications with massive amounts of unchanging data and for multimedia.
Digital video discs ( DVDs) are optical discs the same size as CD- ROMs but of even higher capacity, storing a minimum of 4.7 gigabytes of data.
Input devices gather data and convert them into electronic form for use by the computer. ex. keyboard
output devices Device that displays data after they have been processed. ex. monitor
Cloud computing refers to a model of computing in which firms and individuals obtain computing resources and software applications over the Internet ( also referred to as “ the cloud”).
Cloud computing consists of three different types of services Cloud infrastructure as a service Cloud platform as a service Cloud software as a service
operating system. The system software that manages and controls the computer’s activities
Software As a Service ( SaaS) •Services for delivering and providing access to software remotely as a Web- based service. •Users paying either on a subscription or per- transaction basis. ex. Salesforce.com
open source software Linux is an example of , which provides all computer users with free access to its program code, so they can modify the code to fix errors or to make improvements.
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