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Input Output	2
Microcomputers	2
Computer Graphics	1
Computer Software	1
Data Analysis	1
Data Processing	1
Minicomputers	1
Optical Scanners	1

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Educational and Psychological…

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Kodimer, Dennis	1
Krus, David J.	1
Pascale, Pietro J.	1
Smith, Joseph	1

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Journal Articles	2
Reports - Descriptive	2

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Interfacing Optical Document Scanners: Principles and Practical Considerations.

Peer reviewed

Krus, David J.; Kodimer, Dennis – Educational and Psychological Measurement, 1987

Handlers for interfacing the ScanTron and 2700 Optical Mark Readers with the IBM AT/XT/PC and Tandy 2000/1000/3000 iAPX 88/186/286 based computers were described. Differences between programing an RS232C serial port using BIOS interrupts and directly addressing the Motorola 8550 ART microprocessor were discussed. (Author/LMO)

Descriptors: Data Processing, Input Output, Microcomputers, Minicomputers

LEAF: A Microcomputer Program for Constructing the Tukey Stem and Leaf Graph.

Peer reviewed

Pascale, Pietro J.; Smith, Joseph – Educational and Psychological Measurement, 1986

This paper presents a BASIC microcomputer program that constructs the Tukey (1977) stem and leaf graph. Options within the LEAF program include a modified stem and leaf where the stem is split and a parallel stem and leaf graph where two separate sets of data are displayed from a common stem. (Author)

Descriptors: Computer Graphics, Computer Software, Data Analysis, Input Output