Tin whistle The whistle's fingering system is similar to that of the six hole, "simple system English flutes" ("simple" in comparison to Boehm system flutes). The six hole, diatonic system is also used on baroque flutes, and was of course well known before Robert Clarke began producing his tin whistles. Clarke's first whistle, the Meg, was pitched in high A and was later made in other keys suitable for Victorian parlour music. The company showed the whistles in The Great Exhibition of 1851. The Clark tin whistle is voiced somewhat on an organ-pipe with a flattened tube forming the lip of the
Pennywhistle modem acoustic coupled modems, the Pennywhistle design was dominated by the two large rubber cups on the top of the device that were used to hold the handset of a standard Western Electric phone. The Pennywhistle had a "step" cut into the front of the case where the various control switches were located, and the RS-232 port projected directly out of the front of the case. Pennywhistle modem The Pennywhistle was an early acoustic coupler modem originally designed and built by Lee Felsenstein in 1973, and later commercialized and offered for sale in 1976. It was one of the earliest modems