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Last Updated
03/31/2019
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Detailed entries for one subject from the INDEX TO HOW TO DO IT INFORMATION. |
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COMPUTER CLOCKING & TIMING xx CLOCKWORK -- ELECTRONIC xx COMPUTER xx TIMER -- ELECTRONIC BASIC timing delay, written for a Motorola 6800, will cause delays between 1 and 255 seconds. Using interrupts for real time clocks. Hardware & software for 6800 microprocessors. How to interface an ordinary digital clock to a microcomputer so that the computer can have access to time information. Adding an interrupt driven real time clock to a 6502 microprocessor system. Do you need real time? How to interface a real time clock chip to a 6800 based microcomputer system. KIMER: a KIM-1 timer. Combination digital clock and timer program written for the MOS Technology KIM-1 computer. The LED readout is used to display minutes and seconds. Build a real-time clock circuit for addition to your computer. An interrupt-driven real-time clock for the TMS 9900 16-bit processor. Build the Disk-80, a 32 K-byte memory expansion and 5" floppy-disk controller for the TRS-80 Model 1 computer. Also has a Centronics parallel printer port and real-time clock. Build a half-year clock for the Radio Shack Color Computer. Powered by a 9-volt battery, it will provide a resolution of + or - ten seconds over a six-month period. John Bell Engineering's (Redwood City, CA) Apple II parallel interface board reviewed. Includes 6502 program listing to (1) drive Epson MX-80 printer and (2) simulate a real time clock. Everyone can know the real time. Technological advances have made real-time clocks simple and inexpensive. A look at IC clock chips and typical circuits. CP/M, your time has come. A real-time clock for the most popular microcomputer operating system. Both hardware and software detailed. Real-time clocks and PC-DOS 2.0. Understanding the clock/device-driver interface. Includes a replacement system clock/device driver program based on the IBM PC macroassembler. Timing and counting circuits. How they work and some hands-on ways to exercise the signals. Adding a real-time clock to microcomputer circuits. A look at two ICs you can use to add time and date functions. Fail-safe, real-time clock for TRS-80. Keeps track of seconds, minutes, hours, day of week, day of month, and year. Built-in charger and ni-cad battery keeps unit operating. Est. cost: $30. Adding a reset switch to an IBM XT computer equipped with an 8284 IC clock generator. Let a computer wear your watch. How to interface an electronic wrist watch to your computer so that time and date information can be utilized by your computer programs. Digital time clock program for a computer will display the time in the format hours, minutes, seconds, and time zone on your video terminal. H8 alarm clock program. Program uses the nine-digit LED display and internal speaker to form the "most expensive" alarm clock on the block. Software clock routine for the 6800-based computer. Gives correct date and time in ASCII format. The timebase is derived from the power supply via a simple circuit. Two intriguing and useful Apple II peripherals. (1) Heuristics Speechlab. (2) Mountain Hardware Apple Clock. Includes program and use suggestions. Digital-clock program for the TRS-80 computer. Produces 3" tall numerals on the video display to indicate the time. Written in BASIC. Keeping real time with the OSI Superboard II computer. Simple hardware modification and this program is all that is required. Product evaluation of the West Side Electronics APT-1 real-time clock for the Apple II computer. Digital calendar clock with a battery backup for your 6800-based computer. Thoughts on the 68XX system. Notes on real-time clocks, video boards and EPROMS. Add a digital clock/calendar board to your 6809 computer. Nicad battery keeps time when computer is off. Includes software to set, read and print clock and calendar. Construct a versatile real-time clock, calendar, timer, and interrupt processor card for the Apple computer. May be adapted to other systems. Est. cost: $60. Timekeeping program allows you to enter timekeeping information by clock and job number, hours worked, and the department worked. Written in Heath BASIC. Program to access and display the time, date and day of week from the QT+ Clock/Calendar S-100 board (Revision A). Use with a CP/M program. BASIC programs for using the Hayes Chronograph with an IBM PC. (1) A tutorial on the use of the chronograph. (2) Load date and time into computer during start-up. PC clock/calendar card. Short-slot board gives IBM PC, XT and compatible computer users battery-backed day/date functions. Est. cost: $20. Use your TRS-80 computer as a timer or alarm clock. Program computer to time an event lasting up to 24 hours or to sound an alarm at any desired time. 8080 real time clocks. How they work and the software requirements. Build a clock board for your IBM-PC (or compatible) to keep track of time and date automatically. Est. cost: $50. | |||||||||
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