71. This Chapter does not apply to—

(a) drivers’ cabs or control cabs for vehicles or machinery,

(b) computer systems on board a means of transport,

(c) computer systems mainly intended for public use,

(d) portable display screen equipment not in prolonged use at a workstation,

(e) calculators, cash registers and any equipment having a small data or measurement display required for direct use of the equipment, and

(f) typewriters of traditional design, of the type known as “typewriter with window”.