tailieunhanh - PC Upgrade and Repair Bible Desktop Edition phần 4

và hội đồng quản trị video làm việc với nhau và đóng góp vào hiệu suất của máy tính của bạn, chúng tôi sẽ bắt đầu từ màn hình và làm việc vào bên trong thông qua các chức năng của hội đồng quản trị sau những màn hình Bắt hình ảnh từ dấu chấm và số điện thoại Kiểm tra máy gia tốc video Xem xét nén video | 128 Part IV Storage Summary Seek and access times and sustained data transfer rate are the most important determiners of disk performance in your system. RAID systems can give you greatly increased performance and reliability. Be sure to get enough disk space. Your requirements will always increase over time. CD and DVD Optical drives originated from the need for a high-capacity removable medium for multimedia and software distribution. Inexpensive high-capacity digital technologies for distributing music and video from the consumer electronics industry including both CD and DVD met the requirement well. Other optical formats including magneto-optical drives were popular for a while before writable CD and DVD technologies matured but all of the others have essentially died out in the face of the overwhelming manufacturing volume pushing CD and DVD forward. CDs provide a small inexpensive and rugged way to hold about 650MB of data DVD extends the CD technology to provide far more capacity and greater data transfer rates. This chapter covers how CD-ROMs and DVDs work how you can use CD-ROM and DVD drives in your computer system and how you can make your own CD-ROMs. We ll look at the newest technology and discuss what you can expect from a quality CD-ROM or DVD drive. Chapter 17 covers how you can use writable DVD and video hardware to make your own DVDs. In This Chapter Acquiring inexpensive rugged high-capacity storage Understanding CD and DVD technology What Is a CD-ROM A CD-ROM most resembles the vinyl long-play records still dear to the hearts of audio fanatics. On a record a single spiral in the vinyl winds from the outside to the inside with the analog signal encoded in the deflections along the course of the groove. On a CD-ROM a single spiral encased in plastic winds from the inside to the outside with the digital data encoded by the presence or absence of tiny optical pits. A record stores sound as analog levels which can degrade over time as the vinyl .