PLC'S Chapter 3 Flashcards
What is the Decimal system?
It is the most common to us, has a base of 10. The radix or base of a number system determines the total number of different symbols or digits used by that system.
What is the Binary System?
Binary System-
Uses the number two as the base. The only allowable digits are 0 and 1.
Each ___ is capable of storing data in the form of binary digits, or bits.
Word
The number of ___ that a ___ can store depends on the type of PLC system used.
Bits, word
PLC memory is organized using ___, ____, or ____
Bytes,single words,or double words
A group of __ bits is a byte. And a group of 2 or more bytes is a ___.
8,word
To convert a decimal number to its binary equivalent we must perform a series of division by ___.
2
Computer memory is a series of binary __’s and __’s.
1’s and 0’s
One method of representing a binary number as either a ____ or ____ value to use and extra digit or ____ at the MSB side of the number.
Positive, negative, or sign bit
The ___________ is a base 8 system, is used because 8 data bits make up a byte of information that can be addressed.
The Octal Numbering System
What is a convenient means of handling large binary numbers.
The Octal Numbering System
_____ converts easily to _____ equivalents.
Octal, binary
________________ is a numbering system is used in programmable controllers because a _____ of data consists of ___ data bits, or _________ bytes.
___The Hexadecimal Numbering System_ is a numbering system is used in programmable controllers because a ___word__ of data consists of __16_ data bits, or _____two 8-bit____ bytes.
The Binary Coded Decimal System (BCD) provides a ______way of handling _______ that need to be ________or _______ from a PLC.
The Binary Coded Decimal System (BCD) provides a ____convenient__way of handling ___large numbers____ that need to be ___input_____or ______output_ from a PLC.
______ stands for American Standard Code for Information Interchange.
ASCII
What is an alphanumeric code because it includes letters as well as numbers.
ASCII
A ____ bit is used to detect errors that may occur while a ___ is moved.
A _parity___ bit is used to detect errors that may occur while a _word__ is moved.
___ is a system in which each character transmitted contains ___ additional bit.
__Parity _ is a system in which each character transmitted contains __one_ additional bit.
____ addition follows rules similar to decimal addition. When adding with ____ numbers, there are only ____ conditions that can occur.
___Binary_ addition follows rules similar to decimal addition. When adding with __binary__ numbers, there are only ___four_ conditions that can occur.
The ___ code is a special type of __ code that does not use ____ weighting. In other words, each position does not have a ____ weight. The ____ code is set up so that as we progress from ___ number to the next, only __ bit changes.
The Gray__ code is a special type of binary__ code that does not use ___position weighting. In other words, each position does not have a __definite__ weight. The ___Gray code is set up so that as we progress from __one_ number to the next, only one bit changes.
