Glossary
238
word
A unit of data storage in memory that consists of 16 bits. All data areas consists
of words. Some data areas can be accessed only by words; others, by either
words or bits.
word address
The location in memory where a word of data is stored. A word address must
specify (sometimes by default) the data area and the number of the word that is
being addressed.
word allocation
The process of assigning I/O words and bits in memory to I/O Units and termi-
nals in a PC System to create an I/O Table.
work bit
A bit that can be used for data calculation or other manipulation in programming,
i.e., a ‘work space’ in memory. Also see work word.
work word
A word that can be used for data calculation or other manipulation in program-
ming, i.e., a ‘work space’ in memory. A large portion of the IR area is always
reserved for work words. Parts of other areas not required for special purposes
may also be used as work words.
write-protect
A state in which the contents of a storage device can be read but cannot be
altered.
write protect switch
A switch used to write-protect the contents of a storage device, e.g., a floppy
disk. If the hole on the upper left of a floppy disk is open, the information on this
floppy disk cannot be altered.
Summary of Contents for SYSMAC C200HW-PCS01-EV1
Page 1: ...Cat No W313 E1 3 PC Card Unit SYSMAC C200HW PCU01 C200HW PCS01 EV1 OPERATION MANUAL...
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Page 3: ...SYSMAC C200HW PCU01 C200HW PCS01 EV1 PC Card Unit Operation Manual Revised January 2000...
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