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Record Details

Record 1 of 30435
RighTime: A real time clock correcting program for MS-DOS-based computer systems
Offline Availability: Go to Request Form
Author and Affiliation:
Becker, G. Thomas(Air System Technologies, Inc., Dallas, TX, United States)
Abstract: A computer program is described which effectively eliminates the misgivings of the DOS system clock in PC/AT-class computers. RighTime is a small, sophisticated memory-resident program that automatically corrects both the DOS system clock and the hardware 'CMOS' real time clock (RTC) in real time. RighTime learns what corrections are required without operator interaction beyond the occasional accurate time set. Both warm (power on) and cool (power off) errors are corrected, usually yielding better than one part per million accuracy in the typical desktop computer with no additional hardware, and RighTime increases the system clock resolution from approximately 0.0549 second to 0.01 second. Program tools are also available which allow visualization of RighTime's actions, verification of its performance, display of its history log, and which provide data for graphing of the system clock behavior. The program has found application in a wide variety of industries, including astronomy, satellite tracking, communications, broadcasting, transportation, public utilities, manufacturing, medicine, and the military.
Publication Date: Jun 01, 1993
Document ID:
19940006514
(Acquired Dec 28, 1995)
Accession Number: 94N10986
Subject Category: COMPUTER PROGRAMMING AND SOFTWARE
Document Type: Conference Paper
Publication Information: NASA. Goddard Space Flight Center, The 24th Annual Precise Time and Time Interval (PTTI) Applications and Planning Meeting; p 267-276
Publisher Information: United States
Financial Sponsor: NASA; United States
Organization Source: Air System Technologies, Inc.; Dallas, TX, United States
Description: 10p; In English
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: No Copyright
NASA Terms: CLOCKS; COMPUTER PROGRAMS; REAL TIME OPERATION; TIME MEASUREMENT; COMPUTERS; CORRECTION; ERROR CORRECTING CODES
Imprint And Other Notes: In NASA. Goddard Space Flight Center, The 24th Annual Precise Time and Time Interval (PTTI) Applications and Planning Meeting p 267-276 (SEE N94-10963 01-70)
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