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Manufacturing Cells: Manufacturing involves various levels of automation, depending on the process used, the product desired and production volumes. Manufacturing systems in order of increasing automation include classifications. One of the classifications is the manufacturing cell. These used a designed cluster of machines with integrated computer control and flexible material handling - often with industrial robots.
(Kalpakjian S., Schmid S.R., Manufacturing engineering and technology, pg 1147)

Closed loop control: There are two different types of circuits to control an operation of a NC machine. One of them is closed-loop system which is equipped with various transducers, sensors and counters that accurately measure the position of the work table. Through feedback control, the position of the work table is compared against the signal and the table movements terminate when the proper coordinates are reached.
(Kalpakjian S., Schmid S.R., Manufacturing engineering and technology, pg 1156)

Stereolithography: The most widespread rapid prototyping technology is called stereolithography. Stereolithography creates plastic prototypes of arbitrary geometric complexity directly from computer models of designed parts. The planning for prototyping is vastly simplified and so is the requirement for fixturing. The parts are synthesized via photopolymerization: cured by a laser beam directed across an X-Z surface, a liquid monomer mix is converted to solid plastic objects, point by point, layer by layer, as true as allowed by the photopolymer in all three dimensions. Stereolithography does not require experienced model makers to operate, and the machine runs unattended once the building process starts. It is relatively straightforward for the designer to program and run the Stereolithography by himself.
Thus, the overall cycle time for product development is considerably reduced, especially when objects are complicated or delicate.
(Po-Ting Lan, Shuo-Yan Chou, Lin-Lin Chen, Douglas Gemmill, Computer-Aided Design, Volume 29, Issue 1, January 1997, pg 53-62)

Ink-jet printing: Ink-jet printing process has been recently explored as a solid freeforming fabrication (SFF) technique to produce 3D ceramic parts. Numerous solid freeform fabrication techniques to form ceramic parts have been developed during the last decade. They consist in building ceramic parts by depositing the material, layer by layer, on the basis of computer-aided design (CAD) files of the structures. By a simple modification of the file, it becomes possible to change the configuration of the component; therefore, these methods are specifically appropriate to generate 3D complex ceramic structures without expensive tooling for prototypes or even for small productions.
Ink-jet printing prototyping process consists in the deposition of ceramic system micro-droplets (a few pl) ejected via nozzles to build the successive layers of the 3D structures. Consequently, by adjustment of the aperture of the printing head and the control of the spreading phenomenon of the droplet, one can expect to reach a standard definition around 50nanometer which could finally decrease to 10nanometer, in taking into account the tremendous evolution in the printing field. Moreover, this technique exhibits the additional capability to deposit different materials on the same layer via a multi-nozzle system.
(Rémi Noguera, Martine Lejeune, Thierry Chartier,Journal of the European Ceramic Society, Volume 25, Issue 12, 2005, Pages 2055-2059)