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Census of Population and Housing, 1960 Public Use Sample ...

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II. Technical Conventions for the <strong>1960</strong> <strong>Public</strong> <strong>Use</strong> <strong>Sample</strong> Tape<br />

A. Technical Characteristics <strong>of</strong> Magnetic Tape Recording<br />

Characteristics<br />

1. Computer on which file<br />

originally prepared<br />

2. Computer on which user'8<br />

tape copy created<br />

3. Tape width, reel size,<br />

<strong>and</strong> tape length<br />

4. Recording mode<br />

5. Language<br />

6. Density<br />

7. Parity<br />

8. Recorded tape<br />

representation<br />

9. Interblock Spacing<br />

10. Logical Record Size<br />

11. Blocking factor or<br />

physical record size<br />

12. Field Size<br />

13. Labe&<br />

T<br />

IBM Compatible<br />

7-Track<br />

WIVAC 1107/08<br />

IBM 360/40<br />

IBM 360/65<br />

.5 inch; 10.5 Inch<br />

diameter; lpaximum<br />

2,400 foot. length<br />

NRZI (non-return to<br />

zero)<br />

Binary Coded Decimal<br />

(ND)<br />

Type <strong>of</strong> Tape<br />

IBM 360/40<br />

IBM 360/65<br />

IBM Compatible<br />

V-Track<br />

.5 inch; 10.5 inch<br />

diameter; maximum<br />

2,400 foot length<br />

NRZI (non-return to<br />

zero)<br />

556 or 800 CPI 800 or 1600 CPI<br />

Even Odd<br />

One 6-bit character<br />

per tape frame<br />

.75 inch .6 inch<br />

One B-bit character<br />

(byte) per tape frame<br />

120 characters 120 characters<br />

1800 characters (A<br />

physical record is<br />

composed <strong>of</strong> fifteen<br />

l20-character logical<br />

records)<br />

1 to 5 characters<br />

depending on the<br />

item reported.<br />

St<strong>and</strong>ard IBM OS<br />

labels or unlabeled<br />

1800 characters (A<br />

physical record is<br />

composed <strong>of</strong> fifteep<br />

l20-character logical<br />

records)<br />

1 to 5 characters<br />

depending on the<br />

item reported.<br />

St<strong>and</strong>ard IBM OS<br />

labels or unlabeled<br />

1/ The <strong>Census</strong> Bureau will provide IBM 9-track tapes in USA St<strong>and</strong>ard Code for Information<br />

Interchange (USASCII or ASCII). DUALabs does not provide this language.<br />

d The labels provided on <strong>Census</strong> Bureau tapes are not completely identical to st<strong>and</strong>ard<br />

IBM OS labels.<br />

-l-

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