AUTOMATED SUPPLY SUPPORT
Todays Navy uses computers to perform various
operations to complete its mission.
information concerning computers in the Navy is
described in the Navy Electricity and Electronics
Training Series (NEETS), Module 22, NAVEDTRA
B72-22-00-88. The AK must know all the pertinent
information in the NEETS Module 22 that applies to
supply and maintenance operations. For example, the
most common means of submitting requisitions to the
supply activity is through a computer. To be able to
send the requisition, the AK must know the various
hardware and software associated with the computer
and how to use it. The AK must know how to use the
keyboard, decipher the information on the screen, and
input the information. The AK should also know the
expected products that result from the transaction input
through the computer.
PERSONAL COMPUTER HARDWARE
Personal computers are commonly used throughout
the Navy. These computers are used in entering or
extracting data to perform various tasks. The computer
system is grouped by components or tools known as
hardware and software.
The hardware is the various components that make
up the computer. It is composed of all the mechanical,
electrical, electronic, and magnetic devices of the
computer system. Some examples of the hardware are
the central processing unit (CPU), printers, magnetic
tape units, and disk drive units.
The CPU, also known as mainframe, is the brain of
the computer. The CPU processes the information
entered from any of the input devices and then transfers
the interim or final results to the output devices.
The purpose of the magnetic tape units (drive or
device) is to write data on or read data from a magnetic
tape. The data in the tape is stored in a sequential
manner. When information is requested, the computer
begins researching from the beginning and checks each
record until the desired data is found. This process is
the same as playing a recorded cassette tape. In a
cassette player, to play the third recorded song, the first
and second song are played or the tape is fast forwarded
to the third song.
The magnetic disk drive units are storage devices
that read and write data on the magnetized surface of a
rotating disk. As the disk spins, data can be stored or
retrieved on the disk in a direct manner. This direct
accessing of data is faster than the sequential method.
It provides direct access to any specific data without
having to scan all the records from the beginning.
Floppy disk drive units are smaller than magnetic
disk drive units. The floppy disk drive units are
commonly used with personal (desktop) computers.
The common size of diskettes used with these units are
the 5 WI-inch or 3 1/2-inch disks.
The printers are used to print coded characters on a
document (paper copy). The high-speed printers are
used on mainframes to prepare supply requisitions,
inventory, or financial reports. The daisy-wheel,
dot-matrix, ink-jet, or laser printers are used with
The keyboards are designed to input coded
information to the computer.
It is composed of
keyswitches or keys that enter the data when depressed
by the operator. The keys are imprinted with a legend
to identify their functions. The most common data used
to input information are the alphabetic, numeric, or
character codes. However, some keys are used for
special functions. You should familiarize yourself with
the proper operation of the keyboards.
The display devices are known as the screen,
monitor, or cathode-ray tube (CRT). This device is part
of the computer terminal, computer console, and
personal computer that displays the information to the
operator. The information displayed is only temporary
(known as soft copy).
Software can be defined as all the stored programs
and routines (operating aids) needed to fully use the
capabilities of the computer.