Part 2: Computer Systems Flashcards
A______ is a machine that uses electronic
components and instructions to the components
to perform:
a. Calculations
b. Repetitive and complex procedures
c. Process text
d. Manipulate data and signals
computer
_____ has evolved from huge,
room sized electronic calculators developed
with military funding during World War II to
palm sized machines.
Computer technology
The basic hardware of a computer composes
the computer’s architecture, and includes:
a.
b.
Electronic circuits
Microchips, processors
The basic hardware of a computer composes
the computer’s architecture, and includes:
c.
d.
Random Access Memory (RAM) Read Only Memory (ROM)
The basic hardware of a computer composes
the computer’s architecture, and includes:
e.
Graphic and sound cards
These are attached to a component called a motherboard, a square or rectangular board with circuits into which are plugged the main electronics of the computer.
Computer Hardware
Devices that may be inside the computer case
but are not part of the architecture include:
a.
b.
Main storage device (which is usually an
internal hard drive)
Cooling system
Devices that may be inside the computer case
but are not part of the architecture include:
c.
d.
Modem.
Ethernet connectors
Devices that may be inside the computer case
but are not part of the architecture include:
e.
f.
Optical drives
Universal Serial Bus (USB) connectors
Devices that may be inside the computer case
but are not part of the architecture include:
g.
Multi format media card readers
Devices attached or linked to a computer
that are______ to the main computer
box are part of the system’s hardware:
peripheral
Parts of a computer hardware (Peripheral)
a. Input and output devices - including the
keyboard, touch screen, mouse, printer, and fax
b. Storage components - such as external hard
drives, thumb drives, floppy drives, tape drives,
sound systems (earphones, microphones,
speakers, subwoofers)
c. Computer monitor
The group of required and optional hardware
items that are linked together to make up a
computer system is called a ______.
configuration
A thin, flat sheet made of a
firm, nonconducting material on which the
internal components printed circuits, chips,
slots, and so on of the computer are mounted.
motherboard
Electric conducting lines are etched or soldered
onto the bottom of the ____
motherboard
3 types of computer memories
Random Access Memory
Read Only Memory
Cache
Refers to working memory used for primary
storage.
Random Access Memory (RAM)
Also known as main memory
Random Access Memory (RAM)
Can be
accessed, used, changed, and written on
repeatedly.
Random Access Memory (RAM)
Is the work area available to the CPU for
all processing applications.
Random Access Memory (RAM)
When a user clicks on a program icon, the
computer loads all or part of the program into
_____ where it can be accessed very quickly.
RAM
RAM is called _______because
everything in RAM unloads (is lost) when the
computer is turned off.
volatile memory
Its contents are erased whenever the
power to the computer is turned off and made
ready for new programs when the computer is
turned on again.
RAM
It is a form of permanent storage on the
computer.
Read Only Memory (ROM)
It carries instructions that allow the computer
to be booted (started), and other essential
machine instructions.
Read Only Memory (ROM)
Data and programs in _____ can only be read by the
computer, and cannot be erased or altered by users.
ROM
______generally contains the programs, called firmware, used by the control unit of the CPU to oversee computer functions.
ROM
______storage is not erased when the computer is
turned off.
ROM
A smaller form of RAM.
Cache
Its purpose is to speed up processing by storing
frequently called items in a small, rapid access
memory location.
Cache
Prior to its development all
information had to be fetched from the hard
drive, and then stored in RAM.
Cache
Keeping information that will be used
frequently in ______ greatly reduces the amount
of time needed to move data around among
the memory locations.
cache
It is a relatively inexpensive way to increase the
speed of the computer.
cache
These devices allow the computer to receive
information from the outside world.
Input Devices
The most common input devices are the
__and ____.
keyboard
mouse
Others commonly seen on nursing workstations
include the touch screen, light pen, voice, and
scanner.
Input Devices
A_____ is actually both an input and
output device combined.
touch screen is
A____is a device attached to the computer
that has special software that allows the
computer to sense when the light pen is
focused on a particular part of the screen.
light pen
Some devices are used for security and can
detect users’ fingerprints, retinal prints,
voiceprints, or other personally unique physical
characteristics that identify users who have
clearance to use the system.
Input Devices
___ placed on a patient’s body provide
input into the computerized physiologic
monitors.
electrodes