PC History

1981 : Xerox began working graphical user interface , icons, menus and pointing device ( such as a mouse ) for research . The results of the draw results for Apple , and Apple Computer Inc. Microsoft and later accused of stealing their design, development of the Windows family of software . August 12, 1981 : MS-DOS 1.0 and PC-DOS 1.0 release . Commissioned by IBM, Microsoft DOS operating system development , from Tim Paterson , where they purchased a program called 86-DOS and improved . Sold by the IBM version is called PC-DOS, the Microsoft sales called MS-DOS. Microsoft and IBM co-operation has been to date in 1991 DOS 5.0 . IBM ThinkPad A30 Battery, IBM ThinkPad A31 Battery, The original DOS 1.0 is very simple , each plate is only one root directory , do not support subdirectories , until March 1983 only the improved version 2.0 . MS-DOS in 1995, had previously been with the IBM-PC compatible operating system , Windows 95 launch , and quickly occupied the market, its final version called DOS 7.0. 1982 : Based on TCP / IP protocol of the Internet beginning to take shape . February 1982 : 80,286 issued , the clock frequency up to 20MHz, an increase of protected mode can access 16MB of memory , support more than 1GB of virtual memory , the implementation of 2.7 million instructions per second , integrated by 13.4 million transistors. Spring 1983 : IBM XT machines released , an increase of 10MB hard drive , 128KB RAM , a floppy drive , monochrome monitor , a printer , you can add a number 8087 coprocessor . At that time the price of USD 5,000 . March 1983 : MS-DOS 2.0 and PC-DOS 2.0 increase in a similar form of UNIX hierarchical directory management . 1984 : DNS (Domain Name Server) name server release , Internet hosts more than 1,000 runs . By the end of 1984 : Compaq began developing the IDE interface can transfer data faster , adopted by many peers , was developed on this basis had better performance EIDE interfaces . 1985 : Philips and SONY launch CD-ROM drives . October 17, 1985 : 80386 DX released . Clock frequency to 33MHz, 1GB of addressable memory , executable 6 million instructions per second , integrates 275,000 transistors . November 1985 : Microsoft Windows release . The DOS operating system requires the support , similar to the Macintosh user interface, which is Apple's sue , the action to an end until August 1997 . December 1985 : MS-DOS 3.2 and PC-DOS 3.2 release . This is the first system to support 3.5-inch disks , but only support to 720KB, 3.3 version only supports 1.44MB. 1987 : Microsoft Windows 2.0 release . 1988 : EISA standard build . 1989: The European Institute for Particle Physics, Tim Berners-Lee founded World Wide Web prototype . Through hypertext links , the novice can easily surf the Internet . This greatly contributed to the development of Internet . March 1989 : EIDE standard is established, can support more than 528MB of hard drive , can reach 33.3MB / s transfer rate , and is used in many CD-ROM . April 10, 1989 : 80486 DX released . The processor integrates 120 million transistors , the successor model of the clock frequency to 100MHz. November 1989 : Sound Blaster Card ( sound ) release . May 22, 1990 : Microsoft released Windows 3.0, MS-DOS compatibility mode . November 1990 : the first generation of MPC ( Multimedia PC standard) release . The standard processor of at least 80286/12MHz ( later increased to 80386SX/16MHz) and a drive, at least 150KB/sec transfer rate . 1991 : ISA standard release . June 1991 : MS-DOS 5.0 and PC-DOS 5.0 release . In order to promote OS / 2 development , Bill Gates said DOS5.0 is DOS Terminator , and will not spend energy on this . The basic version broke 640KB memory limit . This version also marks the DOS Microsoft and IBM to cooperate in the end . 1992 : Windows NT release , 2GB of addressable memory . April 1992 : Windows 3.1 release . 1993 : Internet began commercial operation . 1993: the classic game Doom release . March 22, 1993 : Pentium released , the processor integrates 300 million transistors , the early version of the core frequency is 60 ~ 66MHz, the implementation of 100 million instructions per second . May 1993 : MPC standard 2 release , CD-ROM required transmission rate of 300KB / s, 320 × 240 in the window of 15 frames per second playback . March 7, 1994 : Intel released 90 ~ 100MHz Pentium processor . 1994 : Netscape 1.0 browser release . 1994: the famous real-time strategy game Command & Conquer ( C & C ) release . March 27, 1995 : Intel released the Pentium 120MHz processor . June 1, 1995 : Intel released the Pentium 133MHz processor . August 23, 1995 : Pure 32-bit multitasking operating system Windows 95 release . The operating system much different from previous versions , completely out of MS-DOS, but also for the care of the user used to keep the DOS mode . Windows 95 has achieved great success. November 1, 1995 : Pentium Pro released , clocked up to 200MHz, perform 440 million instructions per second , integrating 550 million transistors . December 1995 : Netscape released its JavaScript. January 1996 : Netscape Navigator 2.0 released . This is the first browser to support JavaScript . January 4, 1996 : Intel released the Pentium 150 ~ 166MHz processor , integrated 310 ~ 3.3 million transistors . 1996 : Windows 95 OSR2 release , to revise some of the BUG, expanded function. 1997 : Heft Auto, Quake 2 , and Blade Runner , and other famous games , and is driving the rapid rise of 3D graphics accelerator card . January 8, 1997 : Intel released Pentium MMX CPU, processor, games and enhanced multimedia capabilities . April 1997 : IBM 's Deep Blue (Deep Blue) computer over the human world chess champion Garry Kasparov . May 7, 1997 : Intel released Pentium Ⅱ, added more instructions and Cache. June 2, 1997 : Intel released 233MHz Pentium MMX. February 1998 : Intel processor 333MHz Pentium Ⅱ release , using 0.25 μm process, the speed boost at the same time reducing heat . June 25, 1998 : Microsoft released Windows 98, Dell G5260 Battery, Dell G5266 Battery some people attempt to dismember Microsoft, Microsoft struck back, saying it would harm U.S. national interests . January 25, 1999 : Linux Kernel 2.2.0 release , people have high hopes for its . February 22, 1999 : AMD has released K6-3 400MHz processor . July 1999 : Pentium Ⅲ release , the initial clock frequency above 450MHz , 100MHz bus speed above , using 0.25μm process, support for SSE multimedia instruction set , integration with more than 512KB of secondary cache . October 25, 1999 : code-named Coppermine ( copper ) of the Pentium Ⅲ processor release . Manufactured by Coppermine 0.18 μm technology chip core size further reduced , although the internal integrated 256KB full-speed On-Die L2 Cache, built-in 28 million transistors , but its size was only 106 mm. December 19, 1999 : Microsoft released Windows 2000, which combines the Windows 98 and Windows NT 4.0, many fine features / performance and one , this is our one reason to rename it . She is the Windows family of a new extension beyond the original meaning of Windows NT . March 2000 : Intel release , code-named "Coppermine 128" of the new generation of Celeron processors . The new Celeron processors with the old Celeron the most significant difference is used with the new P Ⅲ processor core and the same Coppermine FC-PGA package, the same way , while supporting SSE multimedia instruction set extensions . April 27, 2000 : AMD announced the formal launch of its new low-cost Duron processor as a trademark , and thus prepared to launch more low-end impact to Intel , while for the high end of ThunderBird is also a subsequent Month of release . July 2000 : AMD lead Intel has released the Athlon 1GHz processor , and subsequently released 1.2GMHz Athlon processor . July 2000 : Intel released the R & D , code-named Willamette Pentium 4 processor , 423 or 478 pins , the chip integrates a 256KB secondary cache , FSB to 400MHz, using 0.18 μm process, using the SSE2 instruction set , and integrate the radiator , its frequency from 1.4GHz start . May 14, 2001 , AMD released the Athlon 4 notebook computers for the processor . The processor uses 0.18 micron manufacturing process , FSB frequency is 200MHz, with 256KB cache and 128KB level 2 cache . May 21, 2001 , VIA released a C3 processor . The processor uses 0.15 micron manufacturing process ( processor core is only 2mm 2), including 192KB full-speed cache (128KB level cache , 64KB secondary cache ), and using Socket370 interfaces . Supports 133MHz front side bus frequency and 3DNow! , MMX multimedia instruction set. August 15, 2001 , VIA announced that its compatible with DDR and SDRAM memory, chipset P4X266 P4 will be a large number of shipments . The chipset 's memory bandwidth of 4GB, is twice the i850 . August 27, 2001 , Intel released the P4 processor clocked up to 2GHz . The wholesale price per 1 000 562 U.S. dollars .

PC Card

PC card which is a credit card is only about the size of the pluggable device , can be docked to a computer or Pocket PC. PC card according to their thickness is divided into Type I, Type II and Type III three models . Pocket PC is docked to the PC Card device will provide data storage or communication function (for example, to connect telephone lines or LAN ) . PCMCIA (Personal Computer Memory Card International Association), was established in 1989, an international standards body and trade organization, the purpose of establishing this organization is to establish uniform standards for integrated circuit boards and to improve the small size , low power consumption Characteristics of mobile computer parts interchangeability . Later, with the change in demand for portable computer users , PC Card Standard also be adjusted accordingly . And in 1991 , PCMCIA on the I / O interface, memory card made and then the definition of the same 68pin connector . At the same time SSS (Socket Services Specification, Interface Specification defined) and CSS (Card Services Specifcation, the card specification defines ) are aware of the increased PCMICA add a new definition of the development trend of the times and the need for common software in this area Compatibility support . In 1993 , PCMCIA2.1 born , PC Card has finally supported the "Card and Socket Services" This is a PC card slot and an effective Communication between the controller chip mode , insert the card slot can be identified and given proper working conditions , When a large number of PC card interface card Modem and the birth of the then still very few built-in card Modem notebooks provide a useful extension . PC Card standard was also continuously updated until April 2001 in the PC card Standard8.0.HP Presario 2500 Battery(compaq 2500 battery),

Pocket PC

Pocket PC is a handheld device that can help you store and retrieve e-mail , contacts and appointments , play multimedia files , and appreciation of electronic games , exchange text messages with MSN Messenger , browse the Web Content ... ... You will be able to with desktop Implementation of information exchange and synchronization . PPC, is the Pocket PC ( referred to as PPC), is based on Microsoft's Windows Mobile operating system, a handheld computer . WinCE Pocket PC using a series of systems developed by Microsoft . PPC also known as portable computers , is that most IT vendors to support a high-end PDA products , with full-color LCD screen, pen- input and so on. PPC, came into being , a great favorite of replacing the posture PDA as fashion . Manufacture of the famous Pocket PC manufacturers are HP, Dell , etc. . PPC said we should say that smart phones, smart phones The main difference is that it uses the operating system . Smart phone operating system is divided into several categories : iPhone, Symbian, Microsoft, MOBILE (SMARTPHONE and PPC are two platforms ), Linux, there PALM. iPhone OS or OS X iPhone is Apple's operating system developed for the iPhone . It is mainly used for iPhone and iPod touch . Like its Mac OS X operating system, based as it is based in Darwin . iPhone OS system architecture is divided into four levels : the core operating system layer (the Core OS layer), the core service layer (the Core Services layer), the media layer (the Media layer), can tap layer (the Cocoa Touch layer) . System operation occupy about 512MB of storage space. Symbian phones are the most abundant , and Microsoft Mobile (SMARTPHONE and PPC are two platforms) operating system more in line with the computer application used to . Linux open better . PALM has a number of FANS. Microsoft windows mobile smart phone difference between two platforms PPC, or Pocket PC, Microsoft Pocket PC -based system architecture , the most common PDA system developed by Microsoft , and Microsoft Pocket PC Phone is developed for Microsoft's smartphone operating system , the biggest difference between the latter Insert the SIM card can be used as cell phone use , and when , after pressing the power button can turn off the PDA functions , but can still continue to use telephone features . Software compatibility , there are also many are interchangeable. Most of the current market smart phones based on Microsoft operating systems have adopted this operating system . Pocket PC Phone and Smartphone is Microsoft 's smart phone development system , the two are similar , but different. Similarities , the two are the Windows mobile family of operating systems , are based on Microsoft 's Windows PC operating system evolved , so that their interface is very similar . While the hardware system, using Microsoft's smart phone systems generally use Intel embedded processor , a relatively high frequency , while using the operating system of smart phones in other hardware ( such as memory , memory card capacity , etc.) Than with other operating systems of smart phones to be much higher , the relatively strong performance , operate more quickly . However, this series of cell phone has some shortcomings , as a result of the high profile , multi- function caused by power consumption, battery life is short, use of high cost of hardware defects . The difference is , Smartphone based on Windows CE kernel development , based on the mobile phone operating system without the help of a stylus , simply use the phone keypad can be done to provide almost all of the operations, therefore , the use of the operating system of mobile phone users with one hand Operation can be , and Pocket PC Phone , you must be operating through the stylus , that is the biggest difference between two types of systems on the performance mode of operation . In addition, although are based on the Windows system, but in the application software are not the same .

Buying tips

What should PC do ? And traditional home appliances , " one-stop " thinking different purchase , PC the fast development of products with the configuration of the top high prices , but the speed is relatively fast computer upgrade . Therefore, users should choose according to their actual needs of the most reasonable in cost performance aspects of the computer . Technical indicators to see . PC manufacturers often have many products to Europe's largest direct computer vendor Tailai computer , for example, its product line covers the economic , professional, rich , top . Super Extreme and many other combinations . The user can select the specific model from motherboard , memory , graphics cards, hard drives , monitors , Modem 's configuration and whether it has DVD playback capabilities , and several other aspects . Do not forget to determine the size of the display screen . In general, the brand of the prices are 15 -inch monitor as the benchmark . At present, the 17-inch display has gradually become fashionable , in learning , Internet and even watch DVD movies when the 17-inch large screen display advantages become increasingly evident. So if less than 600 dollars plus the replacement of a 17-inch display will be even more icing on the cake .

Mobile PC Sony PCGA-BP1N Battery, Sony PCGA-BP2NX Battery,

There are manufacturers, mobile PC is also known as " portable desktop PC " , " home portable one machine " , which is characterized with a laptop with almost the same appearance, but no built-in battery , PC Card slot , usually through the exchange of power for Electricity, has strong portability , and the internal structure of more streamlined, more user-friendly self- promotion and maintenance . In addition, most models can be optional plug-in battery , enabling truly mobile computing. Mobile PC and notebook computer main difference is : Mobile PC accessories mainly used desktop accessories , and laptop accessories are mostly dedicated laptop accessories . 1, on the battery : Mobile PC generally do not have built-in battery, and powered by AC power supply , the latest mobile PC market also has built-in battery , but because of its use of a larger desktop accessory power , so battery The use of shorter, often causing crashes phenomenon , and the notebook is equipped with built-in dedicated 100% battery , use a longer time . 2 , on the PC Card slot : PCMCIA mobile PC virtually no support for a variety of interfaces , and a variety of PC laptops have expansion slots that can easily achieve a variety of peripheral products to connect . 3 , on the CPU and other main parts : mobile PC 's CPU is using a desktop CPU, and more for the P4 series, while the notebook 's CPU they use a dedicated mobile -based notebook CPU, the current mainstream notebook CPU is C4-M and PM Series . Mobile PC with integrated SIS motherboard is basically integrated motherboard , memory is also more common use of SDRAM, DDR memory, less , most of the hard disk has a small capacity of 5,400 rpm . The notebook computer CPU, motherboard , memory and hard drive are all dedicated . 4 , regarding the performance: mobile PC with a desktop machine parts , used in performance can not compared to dedicated laptop accessories . Although some mobile PC is also done in a sophisticated , but far to heavy notebook . 5, on the heat : moving the desktop PC thanks to the accessories , so more heat and power consumption , which is Mobile PC often causes crashes . The laptops are generally advanced copper heat pipe thermal technology , with intelligent cooling fan , an independent space for heat dissipation , to ensure system stability . 6 , on the price : As a result of mobile PC desktop accessories , the price is lower than the laptop , and notebook configurations with the mainstream , then the general price will yuan .