Có 20+ tài liệu thuộc chủ đề "phần cứng CPU"
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Đ n v ơ ị xử lý trung tâm : Là một linh ki n ệ quan tr ng nh ọ ất c a máy tính, ủ được ví như bộ lão của con ngư ờ i, toàn b ộ quá trình xử lý, tính toán và đi u ề khi n đ ể ều được th c ự hi...
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CPU (Central Processing Unit) đ ượ c g i là microprocessor hay processor – là m t ọ ộ đ n v x lý trung tâm, đ ơ ị ử ượ c xem nh não b , m t trong nh ng ph n t c t lõi nh t c a ư ộ ộ ữ ầ ử ố ấ...
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Đ nh th i bi u là c s c a các h đi u hành đa ị ờ ể ơ ở ủ ệ ề ch ươ ng. M c tiêu c a đa ch ụ ủ ươ ng là có nhi u quá trình ch y cùng m t ề ạ ộ th i đi m đ t i...
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THE MISSING MANUAL. Fortunately, David Pogue arrives just in time with iPhone: The Missing Manual: a witty, authoritative, full-color guide to unlocking the iPhone’s potential.. The Missing Manual. With a fi nger swipe or a pinch on the 3.5- inch, multitouch screen, you can bring your music, photos, and videos to life. “Morning Edition,” and creator of the Missing Manual...
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When you’re watching a video, double-tapping switches aspect ratios (video screen shape). In darker gray, surrounding the letters, you’ll find these special keys:. The guided Tour 21 The iPhone has a Caps Lock feature, but you have to request it. in the Settings . From now on, if you double-tap the L key, the key turns blue. You’re now in ...
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If some obsessive ex-lover has been calling you every ten minutes for four hours, you’ll see “Chris Meyerson (24)” in the Recents list. You’ll be asked to confirm your decision. It’s just like the number pad on a normal cellphone, except that the “keys” are much bigger and you can’t feel them.. If you’re not interested in paying those massive...
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Once you’re on the Now Playing screen, a few controls await your fingertip—. if you’re wearing the earbuds, pinching the microphone clicker serves the same purpose: it’s a Play/Pause control.. incidentally, when you plug in headphones, the iPhone’s built-in speaker turns off, but when you unplug the headphones, your music pauses instead of switching abruptly back to the speaker. You ...
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You also have to sign into it, exactly as you’d do if you were using a laptop.. You’ll see the “Enter your payment information” screen either immediately, or as soon as you try to open a Web page of your choice.. To save battery power, and (on a plane) to comply with flight regulations, you can turn off one or...
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The iPhone can’t check corporate exchange mail unless the system administrator can be persuaded to turn on the server’s iMaP feature. visto (visto.com) plans to unveil a software package by the end of 2007 that, once installed by the system administrator, will allow the iPhone to connect to exchange mail servers without sacrificing security. When you’re finished, tap Save.. This...
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A list of videos you’ve flagged as your own personal faves, as described in a moment.. (You can’t rate videos when you’re view- ing them on the iPhone.) This list rounds up the highest rated videos.. This is a list of videos you’ve viewed recently on the iPhone—. and a Clear button that nukes the list, so that people won’t...
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You can c-click (Mac) or Ctrl+click (Windows) any box to turn all the checkboxes on or off. This technique is ideal when you want only one or two songs in the list. if you always want all the songs on that stack of CDs next to your computer, change the iTunes CD import preferences to “import CD and eject” to ...
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“it’s a computer, for the love of Mike,” went the refrain. apple says it’s only trying to preserve the stability of the phone and of the aT&T network. These programs will never show up as icons on your Home screen, and you can get to them only when you’re online, but still, the creativity and use- fulness out there is ...
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Here’s the on/off switch.. If you’ve bought audio books from Audible.com, you can take advantage of this feature to make the reader speed up a little or slow down a little—without sounding like either a chipmunk or James Earl Jones. EQ is equalization—the art of fiddling with specific frequencies in your music to bring out highs, lows, midrange, or whatever,...
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locked mode, 7-8 no sounds, 12-13. controls, 12-13 silencer switch, 12-13 up/down controls, 12-13 volume limiter. controls, 12-13. silencer switch, 12-13 up/down controls, 12-13 volume limiter
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No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without the prior written permission of the publisher.. Preface to the First Edition. Summary of the 68K Instructions. The Architecture of the 8086 CPU. This text is an outgrowth of a course...
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In Figure 1.7 we’ll do a simple-minded experiment.. Let’s pretend that we can place an electrical voltage on the wire that represents the number we would like to transmit between two functional elements of the computer. In fact, one of the first families of elec- tronic computers was the analog computer. can assume an infinite range of values between some...
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As you can see, the p-channel device behaves in a similar manner as the voltage on the gate becomes more negative then the voltage of the source. Thus, at the output of the gate, we see a low resistance (closed switch) to logic 1 and a high resis- tance (open switch to logic 0) and the output of the gate...
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The output of the lower NAND gate goes to 1 because the inputs are now 1 and 0. The 1 is now applied to the input of the upper NAND gate, so the output goes to 0, since both inputs are 1. The output of the upper NAND gate is simultaneously applied to the input of the lower NAND gate,...
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is often used in embedded systems to identify the portion of the pro- gram code that will run forever. The state of the EW traffic sen- sor is an input to our algorithm and it can modify the behavior of the system. As long as neither of the E/W sensors detects a waiting car, the traffic control algorithm will remain...
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The black box is just a slightly simplified version of the basic D flip-flop. When OE is HIGH, the tri-state buffer is disabled, and the Q output of the memory cell is isolated (Hi-Z state) from the data lines (DATA I/O line). Now, let’s return to our analysis of the memory array.. The tri-state buffer on the output of the...