The HP Model 150, also called HP 150, HP Touchscreen or HP 45611A is a compact and innovative computer created by Hewlett-Packard in 1983. It is based on the Intel 8088 and was one of the world's first touch screen computers on the market . Despite running modified MS-DOS versions 2.01, 2.11 and 3.20, the machine was not IBM PC compatible. The 8088 CPU, running at 8MHz, was faster than the 4.77MHz CPUs used by the IBM PC at the time. With the help of expansion cards, the main memory can be increased from 256 KB to 640 KB. However, the motherboard did not have a slot for the optional Intel 8087 math coprocessor due to space constraints.
The computer screen was a 9-inch Sony CRT surrounded by infrared emitters and detectors that detected the position of any non-transparent object that hit the screen.
Storage was possible by means of an HP 9121D or 9122D, a double 3.5 inch floppy disk drive with an HP-IB interface. The drives accommodated single-sided, dual-density disks with space for 270 kilobytes of storage space.