What is a PC card
PC Card This is a pluggable device that is only the size of a credit card and can be plugged into a computer or Pocket PC. The PC card is divided into three types of Type I, Type II and Type III according to its thickness. A PC card device that is plugged into a Pocket PC will provide data storage or communication functions (for example, connecting a telephone line or a local area network).
What is PCMCIA
PCMCIA: Personal Computer Memory Card InternaTIonal AssociaTIon, abbreviation of PC Memory Card International Federation, is an international standards organization and trade union with more than 300 member companies. The organization was established in 1989 to establish an integrated circuit International standards to improve the interchangeability of mobile computers. This kind of computer requires high strength, low energy consumption, small size, and high requirements for these performances.
With the widespread use of portable computer systems (including notebooks, subnotebooks, palmtops, and PDAs), the requirements for portable expansion devices are becoming more and more urgent. Before the expansion card standard was formulated, the peripheral devices (such as plug-in memory and Modem) that computers can use are usually dedicated, and cannot be replaced by similar products from other manufacturers. Many devices like Modem can only be plugged into a specific model of computer, even other models from the same factory cannot be used. Generally, these peripheral devices are not designed to be interchangeable with other computers, but are provided as a fixed design and are only suitable for the type of computer originally assembled.
Therefore, we need a general expansion method. In order to seek an industry standard, several card vendors founded the "Personal Computer Memory Card International Association" (PCMCIA) in the late 1980s, which stipulated the physical design scheme of the memory card and the computer. Slot design, electrical interface and related software. When formulating its own standards, PCMCIA adopted some of the design ideas of the Japan Electronics Industry Development Association (JEIDA). Both organizations have been working to promote the international standard now called "PC Card". In fact, the latest version of the standard has integrated PCMCIA and JEIDA, so that the compatibility between products has been further improved. PC cards are now used in a variety of situations, including several types of RAM memory, pre-programmed ROM cards, modems, sound cards, floppy disk controllers, hard drives, CD-ROM and SCSI controllers, and global positioning system (GPS) cards , Data acquisition card, LAN card, pager, etc. Still in the early stages of development, the PCMCIA market shows a booming development.
The PCMCIA standard enables PC cards to be used in many types of computers, no matter what kind of microprocessor it uses. The PC card can not only be plugged into a computer, but also used in other digital devices, such as test instruments, digital imaging equipment and industrial controllers. System manufacturers, peripheral equipment manufacturers, retailers and system users can all benefit from it. There are currently three PC card standards, all of which have a length and width of 85.6 × 54mm2, but the thickness is different: Type I is the earliest 3.3mm thick card; Type Ⅱ increases the thickness to 5.0mm; Type Ⅲ further increases the thickness to 10.5 mm. For some time, Type I has been used almost exclusively in memory devices. But recently Modem and other devices have also begun to adopt the Type I standard. Type Ⅱ is the most predominant size used in most devices today. Thicker Type III cards are mainly used for mini hard drives, which have become more and more common. Because these three cards share the same bus connector, thinner cards can be smoothly installed into slots designed for thicker cards.
The PCMCIA standard has been around for some time, and it is now in its third edition. In the meantime, a lot of necessary changes and improvements were made to adapt to the changing needs of system and PC card manufacturers. The development of the PCMCIA standard has completely exceeded the scope of the originally defined memory card, and now includes peripheral types: 1. Memory class: hard drive, memory card; 2. Interface class: CDROM / DVD interface, serial port, expansion interface card 3. Network communication: Ethernet / token network card, wireless / infrared LAN card, Modem card, ISDN card, mobile phone card; 4. Multimedia: sound card, video card, game joystick card, TV / broadcast receiving card, video Conference cards, etc. The earliest version is 1.0, and the established standard is mainly for memory cards like current RAM cards. Version 2.0 to 2.1 added the "Card and Socket Service" software specifications, ATA and AIMS specifications (ATA is the abbreviation of "AT attachment", which relates to the IDE drive interface on the PC card; AIMS is " "Automatic index mass storage" is short for a standard for saving images and multimedia data on a PC card, which is usually used for photo / camera technology). The latest PCMCIA version is actually called "PC Card SpecificaTIon" (PC Card Specification), and is sometimes not quite properly called "Version 3.0". This version provides support for DMA (direct memory access), higher-speed multimedia applications, plug and play, multi-function cards, and CardBus. This version also allows the design of PC cards and systems with a logic voltage of 3.3 volts. Due to the energy savings of battery-powered equipment, 3.3-volt logic levels are becoming increasingly popular. Each new release of the PCMCIA standard strives to maintain backward compatibility with older versions.
CardBus has redefined and improved the PCMCIA bus structure, but can still revert to the standards previously formulated in the first and second editions. The main purpose of CardBus is to extend the PCMCIA bus to higher speeds in order to connect more powerful devices and provide support for 32-bit I / O and memory data channels. It includes a new shielded bus connector, and the CardBus card cannot be inserted into the previous generation system designed for 2.x or older versions.
PC Card This is a pluggable device that is only the size of a credit card and can be plugged into a computer or Pocket PC. The PC card is divided into three types of Type I, Type II and Type III according to its thickness. A PC card device that is plugged into a Pocket PC will provide data storage or communication functions (for example, connecting a telephone line or a local area network).
What is PCMCIA
PCMCIA: Personal Computer Memory Card InternaTIonal AssociaTIon, abbreviation of PC Memory Card International Federation, is an international standards organization and trade union with more than 300 member companies. The organization was established in 1989 to establish an integrated circuit International standards to improve the interchangeability of mobile computers. This kind of computer requires high strength, low energy consumption, small size, and high requirements for these performances.
With the widespread use of portable computer systems (including notebooks, subnotebooks, palmtops, and PDAs), the requirements for portable expansion devices are becoming more and more urgent. Before the expansion card standard was formulated, the peripheral devices (such as plug-in memory and Modem) that computers can use are usually dedicated, and cannot be replaced by similar products from other manufacturers. Many devices like Modem can only be plugged into a specific model of computer, even other models from the same factory cannot be used. Generally, these peripheral devices are not designed to be interchangeable with other computers, but are provided as a fixed design and are only suitable for the type of computer originally assembled.
Therefore, we need a general expansion method. In order to seek an industry standard, several card vendors founded the "Personal Computer Memory Card International Association" (PCMCIA) in the late 1980s, which stipulated the physical design scheme of the memory card and the computer. Slot design, electrical interface and related software. When formulating its own standards, PCMCIA adopted some of the design ideas of the Japan Electronics Industry Development Association (JEIDA). Both organizations have been working to promote the international standard now called "PC Card". In fact, the latest version of the standard has integrated PCMCIA and JEIDA, so that the compatibility between products has been further improved. PC cards are now used in a variety of situations, including several types of RAM memory, pre-programmed ROM cards, modems, sound cards, floppy disk controllers, hard drives, CD-ROM and SCSI controllers, and global positioning system (GPS) cards , Data acquisition card, LAN card, pager, etc. Still in the early stages of development, the PCMCIA market shows a booming development.
The PCMCIA standard enables PC cards to be used in many types of computers, no matter what kind of microprocessor it uses. The PC card can not only be plugged into a computer, but also used in other digital devices, such as test instruments, digital imaging equipment and industrial controllers. System manufacturers, peripheral equipment manufacturers, retailers and system users can all benefit from it. There are currently three PC card standards, all of which have a length and width of 85.6 × 54mm2, but the thickness is different: Type I is the earliest 3.3mm thick card; Type Ⅱ increases the thickness to 5.0mm; Type Ⅲ further increases the thickness to 10.5 mm. For some time, Type I has been used almost exclusively in memory devices. But recently Modem and other devices have also begun to adopt the Type I standard. Type Ⅱ is the most predominant size used in most devices today. Thicker Type III cards are mainly used for mini hard drives, which have become more and more common. Because these three cards share the same bus connector, thinner cards can be smoothly installed into slots designed for thicker cards.
The PCMCIA standard has been around for some time, and it is now in its third edition. In the meantime, a lot of necessary changes and improvements were made to adapt to the changing needs of system and PC card manufacturers. The development of the PCMCIA standard has completely exceeded the scope of the originally defined memory card, and now includes peripheral types: 1. Memory class: hard drive, memory card; 2. Interface class: CDROM / DVD interface, serial port, expansion interface card 3. Network communication: Ethernet / token network card, wireless / infrared LAN card, Modem card, ISDN card, mobile phone card; 4. Multimedia: sound card, video card, game joystick card, TV / broadcast receiving card, video Conference cards, etc. The earliest version is 1.0, and the established standard is mainly for memory cards like current RAM cards. Version 2.0 to 2.1 added the "Card and Socket Service" software specifications, ATA and AIMS specifications (ATA is the abbreviation of "AT attachment", which relates to the IDE drive interface on the PC card; AIMS is " "Automatic index mass storage" is short for a standard for saving images and multimedia data on a PC card, which is usually used for photo / camera technology). The latest PCMCIA version is actually called "PC Card SpecificaTIon" (PC Card Specification), and is sometimes not quite properly called "Version 3.0". This version provides support for DMA (direct memory access), higher-speed multimedia applications, plug and play, multi-function cards, and CardBus. This version also allows the design of PC cards and systems with a logic voltage of 3.3 volts. Due to the energy savings of battery-powered equipment, 3.3-volt logic levels are becoming increasingly popular. Each new release of the PCMCIA standard strives to maintain backward compatibility with older versions.
CardBus has redefined and improved the PCMCIA bus structure, but can still revert to the standards previously formulated in the first and second editions. The main purpose of CardBus is to extend the PCMCIA bus to higher speeds in order to connect more powerful devices and provide support for 32-bit I / O and memory data channels. It includes a new shielded bus connector, and the CardBus card cannot be inserted into the previous generation system designed for 2.x or older versions.
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