cordic methods describe essentially the same algorithm that with suitably chosen inputs can be used to calculate a whole range of scientific functions including sin, cos, tan, arctan, arcsin, arccos, sinh, cosh, tanh, arctanh, log, exp, square root and even multiply and divide. the method dates back to volder [1959], and due to its versatility and compactness, it made possible the microcoding of the hp35 pocket scientific calculator in 1972. here is some code to illustrate the techniques. ive split the methods into three parts linear, circular and hyperbolic. in the hp35 microcode these would be unified into one function (for space reasons). because the linear mode can perform multiply and divide, you only need add/subtract and shift to complete the implementation. you can select in the code whether to do the multiples and divides also by cordic means. other multiplies and divides are all powers of 2 (these dont count). to eliminate these too, would involve ieee hackery.
標(biāo)簽： essentially algorithm describe suitably
上傳時(shí)間： 2017-03-02
上傳用戶：litianchu
介紹計(jì)算機(jī)上實(shí)現(xiàn)gsm modem短消息收發(fā)的模式，描述gsm modem PDU 模式，包括PDU 模式下的gsm modem模塊UCS2 編碼、解碼原理，以及gsm modem發(fā)送與接收PDU 串的編制方式， VB 中的MSCOMM 控件，實(shí)現(xiàn)gsm modem短消息收發(fā)的核心內(nèi)容。-briefed on computer modem gsm SMS transceiver model, described GSM modem PDU models, including the PDU mode GSM modem module UCS2 encoding, decoding principle, and GSM modems send and receive PDU Series presentation, the VB MSCOMM Control and achieve short GSM modem news transceiver core content
標(biāo)簽： modem gsm 計(jì)算機(jī) 收發(fā)
上傳時(shí)間： 2017-03-10
上傳用戶：cxl274287265
實(shí)現(xiàn)FPGA和上位機(jī)的串口通信，里面由波特率發(fā)生器，移位寄存器，計(jì)數(shù)器，detecter,switch,switch_bus等功能塊綜合而成。
上傳時(shí)間： 2017-03-22
上傳用戶：dongqiangqiang
//獲得當(dāng)前的模式 oldmode = vga_getcurrentmode[] //初始化 vga_init[] //判斷是否支持該模式 if[vga_hasmode[mode]] vga_setmode[mode] else { printf["No such mode\n"] exit[1] } //取得信息 width = vga_getxdim[] height = vga_getydim[] colors = vga_getcolors[] //繪圖 for[i=0 i<colors i++]{ vga_setcolor[i] vga_drawline[0, i, width-1, i] }
標(biāo)簽： vga_getcurrentmode vga_init oldmode vga_ha
上傳時(shí)間： 2014-12-19
上傳用戶：maizezhen
//獲得當(dāng)前的模式 oldmode = vga_getcurrentmode[] //初始化 vga_init[] //判斷是否支持該模式 if[vga_hasmode[mode]] vga_setmode[mode] else { printf["No such mode\n"] exit[1] } //獲得當(dāng)前的模式 mode = vga_getcurrentmode[] info = vga_getmodeinfo[mode]
標(biāo)簽： vga_getcurrentmode vga_init oldmode vga_ha
上傳時(shí)間： 2017-03-24
上傳用戶：ecooo
Code was successfully implemented within ALtera FPGA with Quartus 6.0. It presents two polish own female names: ULA and ALA whose are scrolling on the 4-columns crystal LED. When you press the switch it will turn from ULA into ALA and continue scrolling.
標(biāo)簽： successfully implemented presents Quartus
上傳時(shí)間： 2013-12-09
上傳用戶：zjf3110
full wave rectifierDuring the period from 偽 to 蟺, the input voltage vs input current is are positive and the power flows from supply to the load. The converter is said to be operated at rectification mode .During the period from 蟺 to 蟺+偽 , the input voltage vs is negative and the input current is is positive and reverse power flows from load to the supply. The converter is said to be operated in inversion mode. Depending on the value of 偽, average output voltage can be either positive or negative and hence provides 2 quadrant operation.
標(biāo)簽： input rectifierDuring the positive
上傳時(shí)間： 2017-04-10
上傳用戶：alan-ee
The main MIPS processor of SMP8630 comes with a JTAG interface, allowing: access to caches and data bus (DRAM) with a bandwidth of about 200kbit/s examining the processor state whatever the execution mode (monice) connecting to monice using mdi-server and using a gdb client on the processor to step and break accurately whatever the execution mode running semi-hosted applications fl ash write tool memory testing (MT command) real-time traces: has not been built in CPU (Config3_TL=0) and only supported by MajicPLUS probes (maybe built into emulator?)
標(biāo)簽： interface processor allowing access
上傳時(shí)間： 2013-12-19
上傳用戶：youke111
DragonRaja Client source version 1.4+ this source allow players join in (Hades Warfield or Monsters warfield). When you compile in debug mode, it is GMtool. else compile in release mode, it is Normal player.
標(biāo)簽： source DragonRaja Warfield Monsters
上傳時(shí)間： 2014-01-25
上傳用戶：lxm
有創(chuàng)新的4*4矩陣鍵盤，只用兩個(gè)switch搞定，學(xué)單片機(jī)的朋友可以分享一下。
標(biāo)簽： 創(chuàng)新 矩陣鍵盤
上傳時(shí)間： 2017-04-22
上傳用戶：ccclll
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