programmable trackball

OpenGL version 2.0 is under planning. For details, see www.opengl.orgThose who support OpenGL are coming to expect that OpenGL will leave d3d behind again to provide the most advanced functions and the best programming interfaces. OpenGL 2.0 proposed by 3dlabs Current main problems:System and Image Construction have changed significantly since 1992, but OpenGL has not followed suit.We are increasingly aware that OpenGL lags behind the functions and performance of today's advanced hardware.The co

developed the standard IEEE Std 1149.1 for standard test port and boundary scan, which is the JTAG interface protocol. The JTAG interface uses four signal lines: TCK, TDI, TDO, and TMS to provide connectivity tests for various pins of the complex chip in serial mode, the progress also enables the configuration of the programmable chip and debugging of the processor chip. Download cable is a cheap tool that uses the parallel port of a computer to impl

1. Quick calculator Mode In emacs23, you can use the M-x quick-Calc command or the shortcut key C-x * Q to start the quick calculator mode. This is a very small tool. After it is started, it will prompt the input mathematical formula in minibuffer, and press enter to display the result. This mode can be easily used for some basic mathematical operations, which is more convenient and quicker than using the built-in calculator. C-G can be used to exit the quick calculator mode. 2.

Many things need to be installed when you use Windows installer to install the vsto program: (1) Ensure that the client has installed the program on the machine. net2.0framework (2) office2003 (vsto supported) (3) install the main interoperability assembly (PIA) from Http://www.microsoft.com/downloads/details.aspx? Familyid = 3c9a983a-ac14-4125-8ba0-d36d67e0f4ad displaylang = enYou can also install the SDK by following these steps: Install main office interoperability assembly

order. Rom is produced on the production line. Due to the high cost, it is generally used only in mass applications. Prom Programmable read-only memory can only be written once. If it is wrong, it has to be decommissioned. Now it is seldom used. It seems that the memory is used in the OPT single-chip microcomputer with lower costs. EPROM EPROM(Erasable Programmable Rom,Erasable

network that uses cell technology to achieve a fixed field strength. It is a one-way communication system for internal use within the building. The system consists of a wireless paging control center, a micro-cell transmitting unit, a data transmission line, and a paging receiver. The paging Control Center is located on the underground floor of the hotel. It is connected to the hotel's programmable telephone switch to enable the switch extension pagi

loaded to the next level of programmable gain amplifier. The echo signal is shown in circuit 3. Siganl In0 ~ The Siganl In3 corresponds to the echo signals of the four-way probe respectively, and the Signal Out is the echo Signal after buffer driving and Impedance Transformation. The P0 port of the single-chip microcomputer provides two signal lines for the MAX4141 channel selection. Table 1 shows the specific work conditions. 4 high frequency ampl

controllers: 1. Programmable Interrupt Controller 8259A Traditional PIC (Programmable Interrupt ControllerTwo 8259A external chips are connected in cascade mode. Each chip can process up to 8 different IRQ. Since the INT output line of the PIC is connected to the IRQ2 pin of the main PIC, the number of available IRQ lines reaches 15, as shown in 1.Figure 1: 8259A cascade schematic 2. Advanced

interrupt priority, and higher-priority interruptions may occur. This means that the first-level interrupt processing code must be carefully written, and the interrupt processing process should have its own stack, this allows you to store the CPU execution status (General registers and context of all CPUs) before the process is interrupted ). Some CPUs have a set of special registers-they exist only in the interrupt mode and can be used in the interrupt mode to save the execution context requir

only after a command is aborted. Asynchronous interruption (usually from the outside) refers to the interruption signal randomly generated by other hardware devices according to the CPU clock. In Intel 80x86 CPU manual, synchronous and asynchronous interrupts are also called "exception" and "interrupt" respectively )".PS: it can be understood that interrupt in the narrow sense is actually an asynchronous interrupt, while interrupt in the broad sense also includes exception (Exceptions include f