CIS133C - Data Structures

• A BIT is the smallest addressible unit and contains ones or zeros which denote an on or off electrical charge. Doesn't that sound like the binary numbering system?

Enter a positive decimal number in the first box, click the equal sign, and you will see the binary equivalent in the second box . . .

to base

• A BYTE consists of eight bits and represents a character such as a lower case 'z' or the digit '4'.

One byte:

• A FIELD consists of a series of bytes representing data.

A field of ten bytes:

BYTE1

BYTE2

BYTE3

BYTE4

BYTE5

BYTE6

BYTE7

BYTE8

BYTE9

BYTE10

• A RECORD is made up of one or more fields.

A record of seven fields:

FIELD1

FIELD2

FIELD3

FIELD4

FIELD5

FIELD6

FIELD7

• A FILE contains records.

A file of three records each with six fields:

REC1,FIELD1	REC1,FIELD2	REC1,FIELD3	REC1,FIELD4	REC1,FIELD5	REC1,FIELD6
REC2,FIELD1	REC2,FIELD2	REC2,FIELD3	REC2,FIELD4	REC2,FIELD5	REC2,FIELD6
REC3,FIELD1	REC3,FIELD2	REC3,FIELD3	REC3,FIELD4	REC3,FIELD5	REC3,FIELD6

TOP OF PAGE

HOME PAGE

CLASS WORK

AS400 PAGE

COBOL BOOKS

COBOL NOTES

COBOL LINKS

HOME EMAIL

WORK EMAIL

HTML help from . . .

Free JavaScripts provided by The JavaScript Source