A hinge apparatus connects a first member and a second member to each other so that the first and second members are mutually foldable, and is usable with a computing apparatus. The synchronous processor for read reads an IP signal from a memory at the timing of the refresh rate to smoothly output and display a picture without jerkiness when dynamic playback is carried out. The inner sleeve is entirely surrounded by an outer sleeve composed of a harder material than the inner sleeve. A front top brace connects the left and right front posts. The cylinder lock is further provided with a rotatable rotor including a keyway into which the thick key is inserted. A store to a stack location is inserted if the stack location is not dead, saving the use of a register.