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When the IBM PC arrived in late 1981, it came with PC-DOS, which was developed from 86-DOS, which Microsoft acquired for this purpose.
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When and IBM
When Compaq introduced the first PC based on Intel's new 80386 microprocessor, the Compaq Deskpro 386, in 1986, it marked the first CPU change to the PC platform that was not initiated by IBM.
When the IBM PC was introduced, IBM sold its operating system as an unbundled ( but necessary ) option.
When the PC was introduced in 1981, it was designated as the IBM 5150, putting it in the " 5100 " series, though its architecture was not directly descended from the IBM 5100.
When one of these keys is pressed, it will cause its control unit, historically, an 3174 or IBM 3274 but later the mainframe integrated communications adapter, to generate an I / O interrupt and present a special code identifying which key was pressed.
When IBM later expanded the S / 370 address space in S / 370-XA, several reasons are cited for the choice of 31 bits:
When IBM announced its Professional Workstation computer in 1986, they noted the lack of third-party programs written for it at the time, signaling those developers to start preparing.
When IBM used the 80286 in their IBM Personal Computer AT, they solved this problem by including a software-settable gate to enable or disable ( force to zero ) the A20 address line, between the A20 pin on the 80286 and the system bus ; this is known as Gate-A20 ( the A20 gate ), and it is still implemented in PC chipsets to this day.
When Microsoft entered an agreement with IBM to develop OS / 2, it lost interest in promoting Xenix.
When the IBM Personal Computer was being developed, DR was asked to supply a version of CP / M written for the Intel 8086 microprocessor as the standard operating system for the PC, which used the code-compatible Intel 8088 chip.
When the LOAD button on the IBM 1402 Card Read-Punch was pressed, a card was read into memory locations 001-080, a word mark was set in location 001, the word marks in locations 002-080 were cleared, and execution started with the instruction at location 001.
When IBM released its first relational database product, they wanted to have a commercial-quality sublanguage as well, so it overhauled SEQUEL and renamed the basically new language ( System Query Language ) SQL to differentiate it from SEQUEL.
When Informix Corporation acquired Illustra and made their database engine an object-SQL DBMS by introducing their Universal Server, both Oracle and IBM followed suit by changing their database engines to be capable of object-relational extensions.
When IBM introduced its System / 360 family of computers in the mid-1960s, it did not provide a solution for this limitation and within IBM there were conflicting views about the importance of and need to support time-sharing.
When IBM contacted other companies to obtain components for the IBM PC, the as-yet unreleased CP / M-86 was its first choice for an operating system because CP / M had the most applications at the time.
When the German astronaut team was merged into a European Space Agency, he did not transfer, but resigned to work at IBM Germany.
When Digital Research founder Gary Kildall examined PC DOS and found that it duplicated CP / M's programming interface, he wanted to sue IBM, which at the time claimed that PC DOS was its own product.
When IBM implemented the parallel interface on the IBM PC, they used the DB25F connector at the PC-end of the interface, creating the now familiar parallel cable with a DB25M at one end and a 36 pin micro ribbon connector at the other.
: When IBM bought Sequent, ... it lacked the size and resources to compete with Sun and Hewlett-Packard Co. in the Unix server market ....
When and PC
When the PC starts up, the first job for the BIOS is the power-on self-test, which initializes and identifies system devices such as the CPU, RAM, video display card, keyboard and mouse, hard disk drive, optical disc drive and other hardware.
When a PC dies, it is often possible for the dead character to be resurrected through magic, although some penalties may be imposed as a result.
When a key is pressed, the foil tightly clings to the surface of the PC board, forming a daisy chain of two capacitors between contact pads and itself separated with thin soldermask, and thus " shorting " the contact pads with an easily detectable drop of capacitive reactance between them.
When attempting to increase processing power, Apple was hampered by the overheating problems of the 68040 ; this resulted in the 100-series PowerBook being stuck with the aging 68030 which could not compete with newer-generation Intel 80486-based PC laptops introduced in 1994.
When the Gold card was finally released, the Sound Blaster series was entrenched as the de-facto PC sound card standard, and priced significantly cheaper than the Adlib Gold.
When Xerox finally entered the PC market with the Xerox 820, they pointedly rejected the Alto design and opted instead for a very conventional model, a CP / M-based machine with the then-standard 80 by 24 character-only monitor and no mouse.
When you enter the disk's password, the disk image is " mounted ", and made available as a new drive letter on your PC.
When using a PC, a typical example of a games control system would be the use of a mouse and keyboard combined.
When the PC party held power at the federal level, it never truly embraced Reaganomics and its crusade against " big government " as vociferously as was done in the USA.
When it was launched, the cost of a PCW system was under 25 % of the cost of almost all IBM-compatible PC systems in the UK.
When an emulator was added to provide PC DOS compatibility, the system was renamed to Concurrent DOS, which later became Multiuser DOS.
The same is true for newer processors: When a single-core Intel CPU was 20 % underclocked, the PC ’ s performance was down only 13 % with a 49 % power reduction.
When Mulroney announced his retirement as PC leader and prime minister, Charest was a candidate for the leadership of the party at the 1993 Progressive Conservative leadership convention.
When the game was released, it received consistently high reviews for all versions, 95 % from Amiga Computing for the Amiga version, 96 % from Computer and Video Games for the PC version.
When and arrived
When the captives arrived in Boston, `` the chaplain ( of their captors ) went to prayers in the open streets, that the people might take notice what they had done in a holy manner, and in the name of the Lord ''.
When I arrived at Viola's I was shown, to my surprise, into the kitchen.
When the police arrived, they found McClellan and the two lawyers sitting and staring silently.
When police arrived the man was still violent, Slate said.
When the latter arrived, he was killed by Seitz von Frauenberg.
When Andronikos arrived he found that his authority was overthrown: Isaac had been proclaimed Emperor.
When D-Day arrived, they had made enough penicillin to treat all the wounded Allied forces.
When the Israelites, led by Joshua toward the Promised Land, arrived at the banks of the River Jordan, the Ark was carried in the lead preceding the people and was the signal for their advance ( Joshua 3: 3, 6 ).
When sitting in review of a decision, the Court will only look at the method in which the decision was arrived at, whereas in an administrative appeal the correctness of the decision itself will be examined, usually by a higher body in the agency.
When Theseus arrived, he did not reveal his true identity.
When Nelson's fleet arrived off Egypt on 1 August and discovered Brueys's dispositions, he ordered an immediate attack, and his ships advanced on the French line.
" When Graham arrived in Greenville, Jones, Jr. emphasized that the basis of the university's position was scriptural and not personal.
When Caliph al-Mu ' izz li Din Allah finally arrived from the old Fatimid capital of Mahdia in Tunisia in 973, he gave the city its present name, al-Qahira (" The Victorious ").
When Beaux arrived in Paris, the Impressionists, a group of artists who had begun their own series of independent exhibitions from the official Salon in 1874, were beginning to lose their solidarity.
When Napoleon arrived, he reorganized the defenses, while realizing that without cannon, the city could not be held.
When the Industrial Revolution arrived, many changes occurred that brought about the food today in its modern form.
When news arrived of Cerialis ' victory over Civilis, Mucianus tactfully dissuaded Domitian from pursuing further military endeavours.
When the invitation arrived, Kaye was busy at work on The Inspector General ( which had a working title of Happy Times for a while ).
When Caraffa's replacement, Count Caprara, was himself transferred in 1694, it seemed that Eugene's chance for command and decisive action had finally arrived.
When the pro-Nestorius Antiochene delegation finally arrived, they decided to convene their own council over which Candidian presided.
When he arrived home, Sullivan learned he would not be able to air the Bergman material from it.
When most of the land army arrived, the King and Queen had a profound dispute.
When the French general Junot arrived in Lisbon, the Portuguese fleet had already left with all the local elite.
When they arrived they found that only 54 of the 193 deportées sent out three years earlier were left ; 11 had escaped, and the rest had died of tropical fevers and other diseases.
When pitcher Roger Clemens arrived in Boston for the first time in 1984, he took a taxi from Logan Airport and was sure the driver had misunderstood his directions when he announced their arrival at the park.
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