A resistive touchscreen was developed by American inventor George Samuel Hurst, who received US patent No. 3,911,215 on October 7, 1975. The first version was produced in 1982.
answer:gigahertz (ghz) is a frequency unit that measures the number of cycles per second. hertz (hz) refers to the number of cycles per second with periodic 1-second intervals. one megahertz (mhz) equals 1,000,000 hz. one gigahertz is equal to 1,000 megahertz (mhz) or 1,000,000,000 hz.