Interfaces for Apple II Computers

Voltage Plotter and Voltage Input Unit:
Our Voltage Input Unit and Voltage Plotter program provide the least expensive way to collect data with an Apple II or IBM-compatible computer. The Voltage Input Unit (VIU) connects to the game port and has a single input that accepts a wide variety of probes, including pH, pressure, and temperature. The Voltage Plotter program collects, graphs, and analyzes the signals. Real-time graphs can be made as data are collected.

Calibration files are provided for each sensor so the proper values, labels, and units are displayed. For example, if you have our pH measurement system, you can load a pH calibration file quickly and start pH measurements. You can calibrate and save calibrations on disk as well.

A Voltage Input Unit can be a great, low-cost way to do lab interfacing in chemistry and physical science classes. Our Chemistry with Computers and Physical Science with Computers book include many student-ready labs designed to be done using a VIU.

The VIU is normally sold assembled and tested. If you or your students would like to assemble them from a parts kit, contact us for additional pricing information.

SPECIFICATIONS:

Sampling Rate = up to 3/sec
Voltage Range = 0 to 3.4VDC
Available for 9-Pin or 16-Pin game port

ORDERING INFORMATION:

Voltage Plotter Software III (Order Code VP-A, $39.95)
Voltage Input Unit (Order Code VIU-9, $45.00)
(for IIe, IIc, or IIGS)
Voltage Input Unit (Order Code VIU-16, $45.00)
(for II+)

COMPATIBLE SENSORS: (use browser back button to return to this page)

Sensor Order Code Price

Barometer BAR-DIN $56.00

Colorimeter COL-DIN $99.00

Conductivity Probe CON-DIN $79.00

Direct Connect Temperature Probe DCT-DIN $28.00

Dissolved Oxygen Probe DO-DIN $189.00

Dual-Range Force Sensor DFS-DIN $89.00

Light Sensor LS-DIN $39.00

Low-g Accelerometer LGA-DIN $88.00

Magnetic Field Sensor MG-DIN $44.00

pH Sensor PH-DIN $72.00

Relative Humidity Sensor RH-DIN $65.00

Thermocouple TCA-DIN $35.00

Voltage Probe VP-DIN $7.00