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IC-s

This Tetris-Clone was assembled from one ATmega8, 240 red LEDs, a few BJTs, a few IC s and some push

This Tetris-Clone was assembled from one ATmega8, 240 red LEDs, a few BJTs, a few IC s and some push-buttons.

標簽： Tetris-Clone assembled few ATmega

上傳時間： 2016-05-29

上傳用戶：ZJX5201314
Atmel AT89C系列單片機電路板設計指南

Designing Boards with Atmel AT89C51,AT89C52, AT89C1051, and AT89C2051 for Writing Flash at In-Circuit Test. Recent improvements in chips and testers have made it possible for the tester to begin taking over the role tradi-tionally assigned to the PROM program-mer. Instead of having a PROM pro- grammer write nonvolatile memories before assembling the board, the in-cir- cuit tester writes them during in-circuit testing operations. Many Teradyne Z18- series testers are now in use loading code into nonvolatile memories, micro- controllers and in-circuit programmable logic devices. The purpose of this note is to explain how the Z18 approaches the writing task for Atmel AT89C series IC’s, so that designers of boards using these chips can get the best results.

標簽： Atmel 89C AT 89

上傳時間： 2013-11-17

上傳用戶：xiaozhiqban
Designing Boards with Atmel AT

Designing Boards with Atmel AT89C51, AT89C52, AT89C1051, and AT89C2051 for Writing Flash at In-Circuit Test:Recent improvements in chips andtesters have made it possible for thetester to begin taking over the role traditionallyassigned to the PROM programmer.Instead of having a PROM programmerwrite nonvolatile memoriesbefore assembling the board, the in-circuittester writes them during in-circuittesting operations. Many Teradyne Z18-series testers are now in use loadingcode into nonvolatile memories, microcontrollersand in-circuit programmable logic devices. The purpose of this note is to explain how the Z18 approaches the writing task for Atmel AT89C series IC’s,so that designers of boards using these chips can get the best results.

標簽： Designing Boards Atmel with

上傳時間： 2013-11-20

上傳用戶：lijianyu172
多遠程二極管溫度傳感器 (Design Considerat

多遠程二極管溫度傳感器-Design Considerations for pc thermal management Multiple RDTS (remote diode temperature sensing) provides the most accurate method of sensing an IC’s junction temperature. It overcomes thermal gradient and placement issues encountered when trying to place external sensors. PCB component count decreases when using a device that provides multiple inputs.Better temperature sensing improves product performance and reliability. Disk drive data integrity suffers at elevated temperatures. IBM published an article stating that a 5°C rise in operating temperature causes a 15% increase in the drive’s failure rate. The overall performance of a system can be improved by providing a more accurate temperature measurement of the most critical devices allowing them to run just a few degrees hotter.The LM83 directly senses its own temperature and the temperature of three external PN junctions. One is dedicated to the CPU of choice, the other two go to other parts of your system that need thermal monitoring such as the disk drive or graphics chip. The SMBus-compatible LM83 supports SMBus timeout and logic levels. The LM83 has two interrupt outputs; one for user-programmable limits and WATCHDOG capability (INT), the other is a Critical Temperature Alarm output (T_CRIT_A) for system power supply shutdown.

標簽： Considerat Design 遠程二極管

上傳時間： 2014-12-21

上傳用戶：ljd123456
從應用角度介紹了ADSP21160 DSP 芯片的基本性能, 并用ADSP21160 實現了基本的陣列信號測向算法- MU S IC 算法1 著重討論了如何利用ADSP21160 的結構和開發環境來

從應用角度介紹了ADSP21160 DSP 芯片的基本性能, 并用ADSP21160 實現了基本的陣列信號測向算法- MU S IC 算法1 著重討論了如何利用ADSP21160 的結構和開發環境來提高程序的執行效率, 滿足系統設計的要求。關鍵詞: SHARC DSP 陣列信號處理 MU S IC 測向算法

標簽： 21160 ADSP DSP 算法

上傳時間： 2014-01-07

上傳用戶：lht618
Microchip s DSP IC dsPIC33 demo code for Explorer 16. It include a LCD some LEDs and some keys. Just

Microchip s DSP IC dsPIC33 demo code for Explorer 16. It include a LCD some LEDs and some keys. Just very simple.

標簽： some Microchip Explorer include

上傳時間： 2013-12-10

上傳用戶：sclyutian
S-35390A是可以在超低消耗電流、寬工作電壓范圍內工作的2線CMOS實時時鐘IC。工作電壓為1.3 ~ 5.5 V、可適用于從主電源電壓到備用電池電壓的寬幅電源電壓。通過0.25 μA的計

S-35390A是可以在超低消耗電流、寬工作電壓范圍內工作的2線CMOS實時時鐘IC。工作電壓為1.3 ~ 5.5 V、可適用于從主電源電壓到備用電池電壓的寬幅電源電壓。通過0.25 μA的計時消耗電流和寬范圍的計時電源電壓，可大幅度地改善電池的持續時間。在使用備用電池工作的系統中，內置的自由寄存器可作為用戶備用存儲器來使用。在主電源切斷前存儲在寄存器中的信息，可在電壓恢復后的任何時候讀出。本產品因為內置了時鐘校正功能，所以可以在很寬的范圍內校正因振蕩電路的頻率偏差所導致的時鐘數據的提前或滯后。通過此功能和溫度傳感器的結合，可根據溫度變化來對時鐘進行校正，從而實現不受環境溫度影響的高精度的計時功能

標簽： 35390 0.25 CMOS 1.3

上傳時間： 2016-10-16

上傳用戶：壞壞的華仔
s document describe davicom ic dm9000 DM9000_h.h . this ic can be used in the embedded systems and n

s document describe davicom ic dm9000 DM9000_h.h . this ic can be used in the embedded systems and network lan cards. its is 10/100Mpbs ic.

標簽： 9000 document describe embedded

上傳時間： 2013-12-10

上傳用戶：xyipie
( 從太原市公交查詢系統建立的必要性出發, 進行了公交查詢算法的研究, 主要探討了包括最短路徑查詢及最少花費查詢及數據庫管理的公交查詢系統的實現。該系統采用了V ISU AL BA S IC 6

( 從太原市公交查詢系統建立的必要性出發, 進行了公交查詢算法的研究, 主要探討了包括最短路徑查詢及最少花費查詢及數據庫管理的公交查詢系統的實現。該系統采用了V ISU AL BA S IC 610 為開發工具, M ICRO SO FT A CCESS2003 為后臺數據庫, 開發了基于太原市公交線路的公交查詢系統。具有線路查詢、換乘查詢、站點查詢、數據管理等一系列功能。

標簽： ISU 查詢系統查詢 AL

上傳時間： 2017-08-31

上傳用戶：asddsd
基于IC卡的新型供暖計費系統設計

將現行的供暖計費方式由按建筑面積計費變為按消耗的熱能計費是供暖計費方式發展趨勢，為了滿足這一計費方式變化的需要，設計了基于IC卡的預付費式新型供暖計費系統，通過測量用戶采暖系統進出口的溫度和流量，計算用戶消耗的熱能，利用IC卡記錄用戶預付費的金額和當年熱能的單價，根據熱能消耗和當年熱能的單價計算用戶采暖費，根據實際發生的供暖費用和預付費金額控制供暖的開停，這一計費方式的變化使供暖計費更趨合理。 Abstract: It is trend that the mode of heat charging is changed from billing by building area to by thermal energy. In order to meet the needs of heat charging mode changing， a new system of heat charging based on IC card is proposed. The user?蒺s energy consumption is calculated by measuring the user inlet and outlet temperature and flow，using the IC card to record the prepaid amount and the current price of heat. The user?蒺s heating costs is calculated according to energy consumption and current price， according to actual heating costs and prepaid amount，the system controls the heating opening or stopping. It is more reasonable that calculated heating costs by user heat consumption

標簽： IC卡計費系統設計

上傳時間： 2013-10-14

上傳用戶：大融融rr

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