Month: July 2015

Texas Instruments TI-99/4A

TI-99 / 4 1979 with RF modulator, optional voice synthesizer, keyboard templates, and cartridge. Note the key change / change color orange.
The microcomputer of the company Texas Instruments went on sale in the United States in 1983. Was very popular in the 80s
The number of microcomputers TI-99 / 4, to which belonged the TI-99/4A was the first series of 16-bit personal computers. In particular, the TI-99/4A had a 16-bit TMS9900 microprocessor running at 3.3 MHz, however, several design decisions in their negative impact on the performance of the machine. Robotics describes an additional similar source. First, only have 256 bytes of RAM addressable by the CPU, and the remaining belonged to 16Kb VDP (Visual Display Processor). Secondly, all the peripherals and the CPU connected to memory through a multiplexer 16-a-8, which required two clock cycles for every access, by introducing wait states (wait state) additional. Credit: Ali Partovi-2011. The computer became the majority of its hardware through a serial bus, a single bit called in English Communications Register Unit (CRU – 9901).

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Computer Embroidery

Computer embroidery – this is one of the most modern methods of traditional, traditional Russian clothing decoration and other things. Products derived from this work are high quality performance, because In this case, almost completely eliminate the human factor. Computer embroidery done on special embroidery machines without direct human intervention, resulting in production is highly speed of execution and, consequently, the possibility of execution of large orders in less time with a much lower cost. With the advent of modern high-tech machines it became possible to embroider the most difficult, even highly image. Embroidery machines, just like people, can cause the most complex designs with fine detail and smooth color transitions. Such perfection computer embroidery machines made only in recent years due to the development of new software for computer embroidery. It provides the fidelity of the original image to embroider surface of the product.

And because the process of sewing following a special program that controls the machine, it allows you to control the most complex works by reducing the scrap rate to a minimum. If on the creation of the most computer embroidery embroidery machine is working, then to create a highly schemes pore artists and designers. As a rule, the task of designers for clothing industry not only includes the development of design embroider the picture, but the design development of the embroider product, and then translate it into an appropriate format. For this purpose special programs of the usual pattern in the scheme by which to performed computerized embroidery. These programs determine the required number of stitches, length, color threads are used to the type of tissue. However, for the best quality of automated operations, all these processes controlled by a man who compares the intermediate results and make adjustments.

Still, it should be noted that the truly sophisticated designs for embroidery equipment is rarely performed, such orders made by hand. Computer embroidery is the most popular for the manufacture of various typical patterns in large quantities – embroidery of logos, emblems or chevrons. This service is especially often in demand by tailoring clothing and textile corporate gifts. Computer embroidery deserves our attention as one of the most effective means of communication and advertising.