During the 1980s a new type of computer called the personal information manager (PIM) appeared, a handheld device whose functions were intended to match the versatile but bulky ring-bound personal organizer of the sort so beloved by ‘yuppies’ (Figure 4.1). Addresses, telephone numbers, and short text messages could be stored on the PIM’s modest flash memory, which also offered a calendar, clock, and alarm function. Data input was through the PIM’s small integrated keyboard; some more advanced PIMs allowed data to be input via a PC-link cable connection. Notable among the PIMs was a series of handheld computers developed by the UK company Psion. PIMs are still available, and the line between PIMs and PDAs has been blurred by virtue of the similar form and large color LCD screens (some of them touchscreens) of some devices.