Tài liệu Chapter-32-Updating the system software pptx

Ngày tải lên: 24/12/2013, 01:17

... following categories: • The userland,that part of the system software that is not the kernel. Unlikesome other operating systems, FreeBSD expects to keep userland and kernel at the same release level. ... RCS, the Revision Control System. This provestobethe most complicated part of the entire upgrade process. The only files that are upgraded are on the traditional root file...

Ngày tải lên: 21/12/2013, 11:15

... the U.S. Space Command of the U.S. Air Force. Basically, the control segment maintains the integrity of both the satellites and the data that they transmit. The space segment is composed of the ... made available to the public in 1969. Timation was a prototype system that never left the ground. Simultaneously, the U.S. Air Force was conducting concept studies for a sy...

Ngày tải lên: 13/12/2013, 05:15

... double-click it. (The higher the number in the Bit Rate column, the better the sound quality.) Wait a moment for your Mac to connect to the appropriate Internet site, and then let the music begin! ... built. Drag songs up or down in the list to reflect their playback order. Keep these points in mind: • The readout at the bottom of the list shows how much time the so...

Ngày tải lên: 14/12/2013, 10:15

... from the Products table The primary key for the Products table is the ProductID column. The CategoryID column of the Products table is a foreign key that references the CategoryID column of the ... The value for the primary key in each row of a table must be unique. In the case of the Customers table, the primary key is the CustomerID column. The key icon shown...

Ngày tải lên: 14/12/2013, 13:15

... at the main form that will be used to launch each of them, shown in Figure A.3. Figure A.3. This form, called frmMain, is the Main form that is used for the examples in this Appendix. The ... called btnOpenConn, and the following is the code used for the Click event, shown here in Listing A.1. Listing A.1 frmMain.vb: Code for Calling the Routine to Open and Display the...

Ngày tải lên: 14/12/2013, 20:16

... contain other methods, fields, or properties. • The get and set accessors cannot take any parameters. The data being assigned is passed to the set accessor automatically, by using the value ... easier to understand and maintain. However, they are no substitute for careful object-oriented design that focuses on the behavior of objects rather than their properties. Accessing priva...

Ngày tải lên: 15/12/2013, 00:15

... basic computer system Figure 7.1 show diagrammatically the basic components of computer hardware joined together in a computer system. The centerpiece is called either the computer, the processor, ... categories – system software and applications software. The former is often simply referred to as “systems”. These, when brought into internal memory, direct the comput...

Ngày tải lên: 21/12/2013, 20:15

... instance of the PrintJob class. The second line invokes the start() method. The moment that the start() method is called, a pop-up window (specific to the operating system) asks whether the user ... stored as the value of the result variable. If the value of result is true, the user has a printer and has opted to continue the printing process. The addPage() met...

Ngày tải lên: 21/01/2014, 13:20

... reproduce software products. The "purity" of the software clean room is determined by the level of detail in the information that is passed into the room: the more detailed the information ... from the target program, for example— the more suspect the process may become and the more likely the clean room program will be similar to the original. The gr...

Ngày tải lên: 24/01/2014, 00:20