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An big X moving from left to right displayed on the 8*8 matrix screen. It simply used the 89c51 and

An big X moving from left to right displayed on the 8*8 matrix screen. It simply used the 89c51 and only P1 & P2 port

標簽： displayed the moving matrix

上傳時間： 2017-07-03

上傳用戶：1079836864
The model shows a wave propagating from left to right through air. A dielectric object scatters the

The model shows a wave propagating from left to right through air. A dielectric object scatters the wave in different directions.

標簽： propagating dielectric scatters through

上傳時間： 2017-08-23

上傳用戶：xfbs821
LED simulator can scroll the massege on screen left to right

LED simulator can scroll the massege on screen left to right

標簽： simulator massege scroll screen

上傳時間： 2014-03-10

上傳用戶：ANRAN
利用纖巧型負載點電路來簡化電源電壓的跟蹤和排序

Multiple-voltage electronics systems often requirecomplex supply voltage tracking or sequencing, whichif not met, can result in system faults or even permanentfailures in the fi eld. The design diffi culties in meetingthese requirements are often compounded in distributedpowerarchitectures where point-of-load (POL) DC/DCconverters or linear regulators are scattered across PCboard space, sometimes on different board planes. Theproblem is that power supply circuitry is often the lastcircuitry to be designed into the board, and it must beshoehorned into whatever little board real estate is left.Often, a simple, drop-in, fl exible solution is needed tomeet these requirements.

標簽： 負載點電路電源電壓排序

上傳時間： 2013-10-08

上傳用戶：15071087253
高效率,高密度,高電流應用的多相轉換器

As logic systems get larger and more complex, theirsupply current requirements continue to rise. Systemsrequiring 100A are fairly common. A high current powersupply to meet such requirements usually requires parallelingseveral power regulators to alleviate the thermalstress on the individual power components. A powersupply designer is left with the choice of how to drive theseparalleled regulators: brute-force single-phase or smartPolyPhaseTM.

標簽： 高效率密度多相轉換器高電流

上傳時間： 2013-10-08

上傳用戶：zhqzal1014
單片機指令系統

單片機指令系統 3.1 MCS－51指令簡介 3.2 指令系統 3.1 MCS－51指令簡介二、MCS－51系列單片機指令系統分類按尋址方式分為以下七種：按功能分為以下四種： 1、立即立即尋址 1、數據傳送指令位操 2、直接尋址 2、算術運算指令 3、寄存器尋址 3、邏輯運算指令 4、寄存器間接尋址指令 4、控制轉移類指令 5、相對尋址 5、位操作指令 6、變址尋址 7、位尋址三、尋址方式 3、寄存器間接尋址 MOV A, @R1 操作數是通過寄存器間接得到的。 4、立即尋址 MOV A, #40H 操作數在指令中直接給出。 5、基址寄存器加變址寄存器尋址以DPTR或PC為基址寄存器，以A為變址寄存器，以兩者相加形成的16位地址為操作數的地址。 MOVC A, @A+DPTR MOVC A, @A+PC 四、指令中常用符號說明 Rn——當前寄存器區的8個工作寄存器R0～R7(n＝0～7)； Ri——當前寄存器區可作地址寄存器的2個工作寄存器R0和R1(i＝0，1)； direct——8位內部數據存儲器單元的地址及特殊功能寄存器的地址； #data——表示8位常數（立即數）； #datal6——表示16位常數； add 16——表示16位地址； addrll——表示11位地址； rel——8位帶符號的地址偏移量； bit——表示位地址； @——間接尋址寄存器或基址寄存器的前綴； ( )——表示括號中單元的內容 (( ))——表示間接尋址的內容；五、MCS－51指令簡介 1. 以累加器A為目的操作數的指令 2. 以Rn為目的操作數的指令 3. 以直接地址為目的操作數的指令 4. 以寄存器間接地址為目的操作數指令應用舉例1 8段數碼管顯示應用舉例2 3.2 指令系統 2、堆棧操作指令 3. 累加器A與外部數據傳輸指令 4. 查表指令 MOVC A, @A+PC 例子： 5. 字節交換指令 6. 半字節交換指令二、算術操作類指令 PSW寄存器 2. 帶進位加法指令 3. 加1指令 4. 十進制調整指令 5. 帶借位減法指令（Subtraction） 6. 減1指令（Decrease） 7. 乘法指令（Multiplication） 8. 除法指令（Division）三、邏輯運算指令 1. 簡單邏輯操作指令 2. 循環指令帶進位左循環指令（Rotate Accumulator Left through Carry flag）右循環指令（Rotate Accumulator Right）帶進位右循環指令（Rotate A Right with C） 3. 邏輯與指令 4. 邏輯或指令 5. 邏輯異或指令四、控制轉移類指令 1. 跳轉指令相對轉移指令 SJMP rel PC←(PC)+2 PC←(PC)+rel 程序中標號與地址之間的關系 2. 條件轉移指令 3. 比較不相等轉移指令 4. 減 1 不為 0 轉移指令 5. 調用子程序指令 7. 中斷返回指令五、位操作指令 1. 數據位傳送指令 2. 位變量邏輯指令 3. 條件轉移類指令

標簽： 單片機指令系統

上傳時間： 2013-10-27

上傳用戶：xuanjie
3.3v看門狗芯片

The STWD100 watchdog timer circuits are self-contained devices which prevent systemfailures that are caused by certain types of hardware errors (non-responding peripherals,bus contention, etc.) or software errors (bad code jump, code stuck in loop, etc.).The STWD100 watchdog timer has an input, WDI, and an output, WDO (see Figure 2). Theinput is used to clear the internal watchdog timer periodically within the specified timeoutperiod, twd (see Section 3: Watchdog timing). While the system is operating correctly, itperiodically toggles the watchdog input, WDI. If the system fails, the watchdog timer is notreset, a system alert is generated and the watchdog output, WDO, is asserted (seeSection 3: Watchdog timing).The STWD100 circuit also has an enable pin, EN (see Figure 2), which can enable ordisable the watchdog functionality. The EN pin is connected to the internal pull-downresistor. The device is enabled if the EN pin is left floating.

標簽： 3.3 看門狗芯片

上傳時間： 2013-10-22

上傳用戶：taiyang250072
場效應管產品指南

The super-junction structure, which has P-type pillar layers as shown left, realizes high withstand voltage and ON-resistance lower than the conventional theoretical limit of silicon.

標簽： 場效應管產品指南

上傳時間： 2014-12-31

上傳用戶：qwer0574
超級瑪麗游戲源碼

超級瑪麗游戲源碼，絕對比你玩的跳的高，alt鍵跳，up,down,left,right上下左右

標簽： 超級源碼

上傳時間： 2013-12-29

上傳用戶：宋桃子
The ICA/BSS algorithms are pure mathematical formulas, powerful, but rather mechanical procedures: T

The ICA/BSS algorithms are pure mathematical formulas, powerful, but rather mechanical procedures: There is not very much left for the user to do after the machinery has been optimally implemented. The successful and efficient use of the ICALAB strongly depends on a priori knowledge, common sense and appropriate use of the preprocessing and postprocessing tools. In other words, it is preprocessing of data and postprocessing of models where expertise is truly ne

標簽： mathematical algorithms mechanical procedures

上傳時間： 2015-03-31

上傳用戶：silenthink