The Categories of Machines and Other IT Infrastructures or Gadgets Flashcards
high-capacity computers with
thousands of processors that can execute more than
several trillion calculations per second.
Supercomputer
These are the most costly and quickest computers
available.
Supercomputer
used by large organizations—such as
banks, airlines, insurance companies, and colleges—
for processing millions of transactions.
Mainframe Computer
process billions of instructions per second
Mainframe Computer
Often users access a mainframe through a terminal,
which has a display screen and a keyboard and can
input and output data but cannot process data by
itself.
Mainframe Computer
• These are costly, powerful personal computers
usually used for complex scientific, mathematical,
and engineering calculations and computer-aided
design and computer-aided manufacturing.
Workstations
It is useful for tasks such as designing airplane
fuselages, developing prescription drugs, and
creating movie special effects.
Workstations
Also called personal computers (PCs), can fit next to
a desk or on a desktop or be carried around
Microcomputers
They either are stand-alone machines or are linked to
a computer network, e.g., a local area network.
Microcomputers
Types of Microcomputers
desktop PCs,
notebooks (laptops), netbooks, tablets, and
smartphones.
This enable microwave ovens, for
example, to store data about how long to cook your
potatoes and at what power setting.
Microcontrollers
A central computer that stores the collections of data
(databases) and programs for connecting or supplying
services to PCs, workstations, and other devices, which are
called clients
Network server
The entire system is called a client/server network
Network server
Any detachable device that provides input and output for
the computer machine.
Computer peripheral
An electronic data memory device that uses magnetic
storage to keep and retrieve digital information using one
or more rigid, rapidly rotating disks coated with magnetic
material.
Hard Disk Drive
The platters paired with magnetic heads usually arranged
on a moving actuator arm, which read and write data to the
platter surfaces.
Hard Disk Drive
Data is read in a random-access manner, indicating that
individual blocks of data can be stored or retrieved.
Hard Disk Drive
A storage device that uses integrated circuit
assemblies as memory to store data persistently, typically
using flash memory.
Solid-State-Drive
A flash memory and has no
moving parts.
Solid-State-Drive
A solid-state devices that connect to the computer via the
USB port.
Flash Drive
It provides a quick and reliable method of storing data
externally
Flash Drive
It is typically removable, rewritable, and much smaller than
an optical disc.
Flash Drive
A hardware device used to maintain a constant voltage
and power line conditioning to the equipment load under a
wide variety of conditions, even when the utility input
voltage, frequency, or system load vary widely.
Automatic Voltage Regulator
A device that supplies battery backup when the electrical
power fails to an unacceptable voltage level.
Uninterruptible Power Supply
provides power for a few minutes,
sufficient to power down the computer in an orderly
manner, while larger systems have an adequate battery for
several hours.
Small Uninterruptible Power Supply (UPS) device
a method of trading messages
between people using electronic devices’ mail.
Email/ Electronic mails
two ways to send and receive an email
• email program
• web-based email
An approach that all addresses follow?
username@domain.
Refers to the principles of behavior that one should
use when writing or answering email messages
Email Etiquette
