To provide a program installable device installing a plurality of programs in a short time.

The program installable device capable of installing a plurality of programs 31, 33, 34, and 35 includes an installing system to install the plurality of programs 31, 33, 34, and 35 time-divisionally in parallel, a setting system to set an initial value of one program during an installing operation of the installing system, an installation detecting system to detect that the one program has been installed, an initial value obtaining system to obtain the initial value set by the setting system on the basis of the detection result of the installation detecting system, and an initial value reflecting system to reflect the initial value obtained by the initial value obtaining system on initial values of other programs.