Microsoft KB Archive/51210
Multiplan: Tandy 5000 MC Generates a Tone PSS ID Number: Q51210 Article last modified on 10-08-1990 PSS database name: D_MPlan
When using Microsoft Multiplan version 4.01 or 4.20 with DOS version 3.3 on a Tandy 5000 MC computer, pressing any key after opening a worksheet will produce an annoying, low-volume, high-pitched oscillating sound.
The sound will change pitch as keys are pressed. This sound is generated through the speaker of the computer. Acoustical insulation around the computer will eliminate the problem. Consult Radio Shack for recommendations regarding how to minimize extraneous speaker noise.
Copyright Microsoft Corporation 1990.