so an external ROM was unneeded on the board. Having fully static RAM and a processor which clock could be frozen without losing state meant very long battery life, measured in weeks or even months. Minimal power use was aided by the processor being frozen whenever there was no work to do, plus a deeper sleep mode, which turned off the display. The machine lacked a full independently battery-backed, date-time real-time hardware clock, instead it had a simple hardware counter. While the machine was sleeping, the counter counted 1,024 seconds and then woke the machine very briefly, so that software could add 1,024 seconds to a record of the time held in RAM. This meant that when sleeping the machine woke very fleetingly every 17 minutes 4 seconds. The original 1984 price was £99 GBP or $199 CAD and included one Datapak and one software Datapak, the Utility pack. This latter adds scientific and trigonometric functions to the otherwise basic calculator routines. Organiser II In 1986, the successful Organiser II introduced many hardware improvements, a better keyboard and display, a much larger ROM and either 8 KB (CM Model), 16 or 32 KB (XP Model), 32 or 64 KB (later LZ Model) of battery-backed RAM, and featured a capable newly designed single-tasking operating system. The first Organiser II models featured a two-line display. The new model supported several different types of improved Datapaks, containing either EPROM or battery-backed RAM storage, each storing between 8 KB and 128 KB of data. Later electrically erasable programmable read-only memory (EEPROM) flashpaks, and random-access memory (RAM) RAMpaks, were added to the range, able to store up to 256 KB on each extension slot. The machine had far more application functionality, including many built-in application programs, an easy-to-use database, a diary, and an alarm clock, and featured end-user programmability in the form of the successful then-named Organiser Programming Language (OPL), a BASIC-like language, which was compiled to intermediate code, in contrast to the interpreters, which were commonly available for other consumer computers of the time. More advanced users could edit the system machine-code routines, either by direct machine code or by calls from OPL, could manipulate the built-in address database, and create their own. The Organiser II was widely used for commercial applications in companies such as Marks & Spencer, where it was used on the shop floor, with their branding instead of Psion's and