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Sinomanic
The Sinomanic Tianhua GX-1C is a specially tailored subnotebook for primary and secondary school students in the People's Republic of China. It uses the Loongson I (Longxin) CPU. The device is designed for use as an educational aid and to introduce young students to computers. History Sichuan-based Sinomanic Co., Ltd., launched four models of low-cost personal computers in 2006. Sinomanic is the second maker of Loongson-based personal computers in mainland China. The firm has announced a sales target of 500,000 to 1 million units for their Tianhua GX-1C model. The GX-1C uses a Loongson I (Longxin) CPU similar to that used in the commercially distributed Longmeng Municator from a Chinese startup named ''Yellow Sheep River''. Loongson (Longxin) translates as "Dragon Chip". Sinomanic has created four different models for distribution to specific markets. The Tianhua GX-1 and Tianhua GX-1C are marketed for education. The Tian Yan GX-2 is a rural computer marketed for farmers, Tian Y ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sinomanic
The Sinomanic Tianhua GX-1C is a specially tailored subnotebook for primary and secondary school students in the People's Republic of China. It uses the Loongson I (Longxin) CPU. The device is designed for use as an educational aid and to introduce young students to computers. History Sichuan-based Sinomanic Co., Ltd., launched four models of low-cost personal computers in 2006. Sinomanic is the second maker of Loongson-based personal computers in mainland China. The firm has announced a sales target of 500,000 to 1 million units for their Tianhua GX-1C model. The GX-1C uses a Loongson I (Longxin) CPU similar to that used in the commercially distributed Longmeng Municator from a Chinese startup named ''Yellow Sheep River''. Loongson (Longxin) translates as "Dragon Chip". Sinomanic has created four different models for distribution to specific markets. The Tianhua GX-1 and Tianhua GX-1C are marketed for education. The Tian Yan GX-2 is a rural computer marketed for farmers, Tian Y ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Longmeng
Jiangsu Lemote Tech Co., Ltd or Lemote () is a computer company established as a joint venture between the Jiangsu Menglan Group and the China, Chinese Institute of Computing Technology, involved in computer hardware and computer software, software product (business), products, service (economics), services, and projects. History In June 2006, shortly after Institute of Computing Technology of the Chinese Academy of Sciences developed Loongson 2E they need a company to build end product, so the Jiangsu Menglan Group began a joint venture with the Institute of Computing Technology of the Chinese Academy of Sciences. The venture was named Jiangsu Lemote Tech Co., Ltd. A computer was announced by Fuxin Zhang, an ICT researcher also a Lemote staff, who said the purpose of this project was to "provide everyone with a personal computer". The device is intended for low income groups and rural area students. Hardware Lemote builds Small form factor (desktop and motherboard), small form ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Loongson
Loongson () is the name of a family of general-purpose, MIPS architecture-compatible microprocessors, as well as the name of the Chinese fabless company (Loongson Technology) that develops them. The processors are alternately called Godson processors, which are described as its academic name. History The ''Godson'' processors, based on MIPS architecture, were initially developed at the ''Institute of Computing Technology'' (ICT), Chinese Academy of Sciences (CAS). The chief architect was Professor . The development of the first Loongson chip was started in 2001. The aim of the Godson project was to develop "high performance general-purpose microprocessors in China", and to become technologically self-sufficient as part of the Made in China 2025 plan. The development was supported by funding via the 10th and 11th Five-Year Plans. In 2010 the company was commercialised as a separate entity, and in April 2010 ''Loongson Technology Corporation Limited'' was formally established ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Direct Memory Access
Direct memory access (DMA) is a feature of computer systems and allows certain hardware subsystems to access main system memory independently of the central processing unit (CPU). Without DMA, when the CPU is using programmed input/output, it is typically fully occupied for the entire duration of the read or write operation, and is thus unavailable to perform other work. With DMA, the CPU first initiates the transfer, then it does other operations while the transfer is in progress, and it finally receives an interrupt from the DMA controller (DMAC) when the operation is done. This feature is useful at any time that the CPU cannot keep up with the rate of data transfer, or when the CPU needs to perform work while waiting for a relatively slow I/O data transfer. Many hardware systems use DMA, including disk drive controllers, graphics cards, network cards and sound cards. DMA is also used for intra-chip data transfer in multi-core processors. Computers that have DMA channels can trans ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Programmed Input/output
{{disambiguation ...
Programmed may refer to: * ''Programmed'' (Innerzone Orchestra album), 1999 * ''Programmed'' (Lethal album), 1990 See also * Program (other) Program, programme, programmer, or programming may refer to: Business and management * Program management, the process of managing several related projects * Time management * Program, a part of planning Arts and entertainment Audio * Programm ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Disk Controller
{{unreferenced, date=May 2010 The disk controller is the controller circuit which enables the CPU to communicate with a hard disk, floppy disk or other kind of disk drive. It also provides an interface between the disk drive and the bus connecting it to the rest of the system. Early disk controllers were identified by their storage methods and data encoding. They were typically implemented on a separate controller card. Modified frequency modulation (MFM) controllers were the most common type in small computers, used for both floppy disk and hard disk drives. Run length limited (RLL) controllers used data compression to increase storage capacity by about 50%. Priam created a proprietary storage algorithm that could double the disk storage. Shugart Associates Systems Interface ( SASI) was a predecessor to SCSI. Modern disk controllers are integrated into the disk drive as peripheral controllers. For example, disks called "SCSI disks" have built-in SCSI controllers. In the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
IT8212
The IT8212, or more correctly the IT8212F, is a low-end Parallel ATA controller designed by ITE Tech. Depending on the implemented BIOS and configuration the IT8212F functions in either a RAID or an ATAPI mode, supporting up to four devices using dual channels. The raid mode only supports IDE Hard Disk Drives and includes RAID 0, RAID 1, Raid 0+1 and JBOD, along with a "normal" mode that essentially acts as a standard Hard Disk controller. Optical disk drives such as CD-ROM and DVD drives are supported by the ATAPI mode, which also supports Hard Disk Drives at the loss of all RAID functions. RAID functions are implemented by an embedded microprocessor A microprocessor is a computer processor where the data processing logic and control is included on a single integrated circuit, or a small number of integrated circuits. The microprocessor contains the arithmetic, logic, and control circ ..., thus is not a so-called " Soft raid" controller. Devices based on ITE's IT82 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Integrated Drive Electronics
Parallel ATA (PATA), originally , also known as IDE, is a standard interface designed for IBM PC-compatible computers. It was first developed by Western Digital and Compaq in 1986 for compatible hard drives and CD or DVD drives. The connection is used for storage devices such as hard disk drives, floppy disk drives, and optical disc drives in computers. The standard is maintained by the X3/INCITS committee. It uses the underlying (ATA) and Packet Interface ( ATAPI) standards. The Parallel ATA standard is the result of a long history of incremental technical development, which began with the original AT Attachment interface, developed for use in early PC AT equipment. The ATA interface itself evolved in several stages from Western Digital's original Integrated Drive Electronics (IDE) interface. As a result, many near-synonyms for ATA/ATAPI and its previous incarnations are still in common informal use, in particular Extended IDE (EIDE) and Ultra ATA (UATA). After the introdu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Secure Digital
Secure Digital, officially abbreviated as SD, is a proprietary format, proprietary non-volatile memory, non-volatile Flash memory, flash memory card format developed by the SD Association, SD Association (SDA) for use in portable devices. The standard was introduced in August 1999 by joint efforts between SanDisk, Panasonic (Matsushita) and Toshiba as an improvement over MultiMediaCard, MultiMediaCards (MMCs), and has become the industry standard. The three companies formed SD-3C, LLC, a company that licenses and enforces intellectual property rights associated with SD memory cards and SD host and ancillary products. The companies also formed the SD Association (SDA), a non-profit organization, in January 2000 to promote and create SD Card standards. SDA today has about 1,000 member companies. The SDA uses several trademarked logos owned and licensed by SD-3C to enforce compliance with its specifications and assure users of compatibility. History 1999–2003: Creation In 1 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hard Disk Drive
A hard disk drive (HDD), hard disk, hard drive, or fixed disk is an electro-mechanical data storage device that stores and retrieves digital data using magnetic storage with one or more rigid rapidly rotating platters coated with magnetic material. The platters are paired with magnetic heads, usually arranged on a moving actuator arm, which read and write data to the platter surfaces. Data is accessed in a random-access manner, meaning that individual blocks of data can be stored and retrieved in any order. HDDs are a type of non-volatile storage, retaining stored data when powered off. Modern HDDs are typically in the form of a small rectangular box. Introduced by IBM in 1956, HDDs were the dominant secondary storage device for general-purpose computers beginning in the early 1960s. HDDs maintained this position into the modern era of servers and personal computers, though personal computing devices produced in large volume, like cell phones and tablets, rely on ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
24-bit Color
In computer architecture, 4-bit integers, or other data units are those that are 4 bits wide. Also, 4-bit central processing unit (CPU) and arithmetic logic unit (ALU) architectures are those that are based on registers, or data buses of that size. Memory addresses (and thus address buses) for 4-bit CPUs are generally much larger than 4-bit (since only 16 memory locations would be very restrictive), such as 12-bit or more, while they could in theory be 8-bit. A group of four bits is also called a nibble and has 24 = 16 possible values. Some of the first microprocessors had a 4-bit word length and were developed around 1970. Traditional (non-quantum) 4-bit computers are by now obsolete, while recent quantum computers are 4-bit, but also based on qubits, such as the IBM Q Experience. See also: Bit slicing#Bit-sliced quantum computers. The first commercial microprocessor was the binary-coded decimal (BCD-based) Intel 4004, developed for calculator applications in 1971; it had a 4- ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Clock Rate
In computing, the clock rate or clock speed typically refers to the frequency at which the clock generator of a processor can generate pulses, which are used to synchronize the operations of its components, and is used as an indicator of the processor's speed. It is measured in the SI unit of frequency hertz (Hz). The clock rate of the first generation of computers was measured in hertz or kilohertz (kHz), the first personal computers (PCs) to arrive throughout the 1970s and 1980s had clock rates measured in megahertz (MHz), and in the 21st century the speed of modern CPUs is commonly advertised in gigahertz (GHz). This metric is most useful when comparing processors within the same family, holding constant other features that may affect performance. Determining factors Binning Manufacturers of modern processors typically charge premium prices for processors that operate at higher clock rates, a practice called binning. For a given CPU, the clock rates are determined at th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
