First PC

That’s the 3D model of the first PC that is rather primitive but already performs the majority of a modern 3D PC functions. Thus, 3D first PC is a general-purpose 3D computer whose size, capabilities, and original sales price make it useful for individuals, and which is intended to be operated directly by an end user with no intervening computer operator. So, the 3D first PC led to the contrast with the batch processing or time-sharing models which allowed large expensive mainframe systems to be used by many people, usually at the same time, or large data processing systems which required a full-time staff to operate efficiently.