We checked the classic PC design in Apple's history a few days ago. Its colorful candy-colored outer cover won high praise from users. The popularity of Mac has also become a stepping stone for Apple's re-emergence. Under Steve Jobs’s leadership, Apple launched Apple in 2001. Another milestone in the history of the product line is the iPod, which has since changed the format of digital music and the entire record market. Although the first-generation iPod was not as brilliant as its younger generation and had only a monochrome black-and-white screen, its design was quite amazing compared to other competitors at the time. It was equipped with a ring-mounted roller selection called iPod Click Whell. Disk operation, this classic design is also continued in the iPod's product line.
One of the most classic is the classic series that everyone is familiar with. Classic 3 is the last product of the series. As the most orthodox system of the iPod, classic can be described as a matter of fact. It continues the old iPod's classic design, revealing its exquisite manufacturing techniques and design aesthetics in its simplicity. Classic3 is also the iPod's most iconic product.
iPod as a portable music device, its larger body and some of the "walkman" concept does not match, so in 2005 Apple introduced a compact iPod mini, which uses a micro hard drive as a memory, compared to the size of the iPod minus It is 69% smaller, and brings a variety of anodized aluminum fuselage, iPod gradually toward a lively, young and energetic route.
With other predecessors who use hard disks as storage media, iPod nano with flash memory media is the mini series orthodox successor. As the cost of flash memory chips gradually decreases, Apple also uses flash memory chips as storage materials, which not only saves power, but also saves power. It also made the nano series even slimmer, 62% smaller than the predecessor mini, and added a 32768-color screen to the mini model for the first time.
In the second generation of the iPod nano has a slight improvement in appearance, abandoned the body that used to design the acrylic + metal back cover before, instead using aluminized shell, a certain degree of improvement in durability, and provide Black, silver, pink, blue, green and other colors for users to choose.
The third-generation iPod nano is the cutest form of the series, commonly known as "little fat man", unlike its siblings' slender shapes, but with a short and thick body similar to Classic, with a short and chubby shape. Meng Meng, deeply loved by users.
After a brief experience of short and thick nano 3, nano 4 returned to a slender figure. Nano 4 basically continued the previous generation configuration with the same 2-inch color screen but changed from horizontal to vertical. Nano 4 offers 8GB/16GB two kinds of capacity to choose from, and offered the pink, red, orange, yellow, green, blue, purple, black, silver multi-coloured fuselage, quite eye-catching.
The fifth-generation nano 5 continues its 4th-generation design in appearance, but the screen has been increased to 2.2 inches, the resolution has been increased to 240×376, and a 300,000-pixel camera has been added. The camera can be used to resolve 640×480 pixels. Rate video. Although the appearance of the color is consistent with the 4th generation, the nano 5 is changed from the aluminum alloy plated to the polished aluminum plate, and the color is brighter.
iPod nano 6 is the smallest nano family. Compared to its predecessor, nano 7 has a 46% reduction in size. It is a little larger than the Shuffle 4 and is quite small and exquisite. It uses a shuffle-like clip design. Can be transformed into a "nano smart watch" with a custom strap, but the design only used a generation, then the nano 7 abandoned the design.
In addition to the classic/mini/nano few big brothers, do not forget to use shuffle series as a selling point, as a relatively inexpensive iPod selection, the aircraft is not equipped with a display system, so it can only be a simple operation, only It can perform basic operations such as sequential play/random play, previous song next play pause and the like. The 2, 3, and 4 models of this series are all equipped with a back clip design, which can be clipped to the clothes so that the user can carry it when exercising or outdoors.
Incremental encoders provide speed, direction and relative position feedback by generating a stream of binary pulses proportional to the rotation of a motor or driven shaft. Lander offers both optical and magnetic incremental encoders in 4 mounting options: shafted with coupling, hollow-shaft, hub-shaft or bearingless. Single channel incremental encoders can measure speed which dual channel or quadrature encoders (AB) can interpret direction based on the phase relationship between the 2 channels. Indexed quadrature encoders (ABZ) are also available for homing location are startup.
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