1. هذا الموقع يستخدم ملفات تعريف الارتباط (الكوكيز ). من خلال الاستمرار في استخدام هذا الموقع، فإنك توافق على استخدامنا لملفات تعريف الارتباط. تعرف على المزيد.

خدعه بصريه

الموضوع في 'أخبار المسافرون العرب' بواسطة الافى, بتاريخ ‏25 يناير 2009.

هوتيل فور ارب | Hotel For Arab

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  1. الافى

    الافى موقوف

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    .كل ما عليك هو التدقيق لمدة 30ثانية بالنقط التلات الموجودة بالصورة.بعدها ارفع راسك و انضر الى الحائط و قل لنا ماذا رايت

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  2. المشكله يا بن صامل عندي هسه دنيا ليل وخاف اشوف منظر مرعب وتخبل
     
  3. الافى

    الافى موقوف

    إنضم إلينا في:
    ‏4 أكتوبر 2008
    المشاركات:
    746
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    هههههههههههههههههههههههههههههه
    ههههههههههههههههههههههههههههههه

    بعيد عنج يا غالية

    الله يكون بالعون ... ويحفظج لنا
     
  4. efg

    efgh536 Guest

    The development of chi hair straighteners

    Foreword Fashion and beauty are an eternal talking, with a gentle flowing straight hair still is one of the many female friends have no reason to regret the choice. At present, there are variety of straight hair product in the market, a few not so few. Faced with such fierce competition, how to design a low cost and high performance with the straight hair is to consider and resolve the problem. chi hair straighteners are designed HOLTEK octet of a high-performance RISC microcontroller, designed for economical multi-input control of the majority of product design, for straight hair design has a cost advantage. This paper is based on chi hair straightener introduced straight hair design and implementation process, on the related product design has a good reference value. Principle Straight hair typically have a number of function keys as well as the temperature profile shows and other functions, including function keys boot keys, temperature + and temperature - such as keys, boot keys used to open or turn off power supply, temperature + and temperature - used to set the temperature, the temperature file shows that straight hair devices used to display the current temperature of the heating film. Heating and the heating speed to control the TRIAC from hair straightener and implementation. Temperature measurement is using RC charge-discharge principle to achieve. Straight hair Principle block diagram shown in Figure 1. MCU Introduction Hair straighteners are designed HOLTEK octet of a high-performance RISC microcontroller, designed for economical multi-input control of the majority of product design, has a low-power, 11 bi-directional I / O ports, a built-crystal and RC oscillator circuit, power and wake-up functions, watchdog timer, as well as advantages such as low-cost, so that This multi-functional chip can be widely applied to various applications such as industrial control, consumer products, subsystem controllers, etc. . To achieve the functions of the Straight hair, resources required are as follows: charge-discharge occupied by three I / O, TRIAC control occupies an I / O, 3 function keys, 5 temperature profile LED instructions, a boot LED instructions. HT48R062 because only 11 I / O, therefore the need for keys and temperature profile LED multiplexing deal to do. Principles of implementation Straight hair browser complete circuit as shown in Figure 2. hair straightener because of the I / O resources are limited, so when taking into account the necessary keys and LED display make time-sharing multiplexing treatment. JP1 map is then heat-chip joints, JP2 Department then coil motor used to generate negative ions implementation function, negative ion function in the majority of hair products do not use, it can be chosen according to actual needs. Schematic diagram in accordance with the functions of the entire division can be divided into the power of the schematic diagram of the temperature measurement and heating control in three parts. Realizing theory Power in part through the RC-way step-down AC 220V/50Hz DC 5V for reduced MCU power supply. RC Buck's working principle is the use of capacitance in a certain frequency of ac signal generated by capacitive reactance to limit the maximum operating current. Due to low-power applications where low current limit, and therefore should be used to control the entire load current client. By choosing different parameters of the capacitor, that can be divided into three parts. Temperature measurement the use of three general I / O port and a resistance, capacitance are to achieve temperature measurements, schematic diagram shown in figure 3. Map, R7 as a reference resistor, the resistance value selected as the reference resistor 10k, NTC for the PTC thermistor heating plate, and its resistance with temperature decrease. Temperature measurement is the use of RC charge-discharge principle to achieve, the process of charge-discharge as follows: C3 fully discharged, the only reference resistor R7 to the C3 charge, setting the highest potential PA6 charging the time spent for Tf; then C3 fully discharged, NTC resistor only to the C3 charge, setting the highest potential PA6 charging the time spent for the Tm. Because of resistance and charging time is proportional, therefore, NTC resistor is calculated as: Where: Rm-NTC resistor resistance Rf-reference sheet resistance Tm-use NTC resistance at the time of charging time Tf-use reference resistor when charging time In actual use, in order to reduce measurement error, can be repeated charge-discharge method of averaging to reduce error. Heating control Heating control through chi hair products an I / O port to control the conduction of the TRIAC and disconnected, TRIAC conduction heating, disconnect when to stop heating. Because of using the AC 220V/50Hz, so necessary in controlling the TRIAC when the zero-crossing detection. Treatment program based on differences in the way, you can use a half wave or full-wave hot. The chart of Software implementation flow Software flow chart is shown in Figure 4. Initialized after the first boot, if the boot key is pressed to enter the next step, otherwise, it will be waiting for this. After the first boot is automatically shut down, then use flag to determine whether Auto_off_flag is one, then automatically turned off, or else to enter the next step. To enter the program after the main loop followed by implementing the following actions: calculating thermistor charging time to calculate the charging time reference resistor to calculate the thermistor resistance, temperature control and temperature display. If the button has been pressed, the corresponding keys of which is in deal, in which A is represented by the flow in Figure 5. Research Prospect In this paper, based on the straight hair farouk chi 1's detailed design and implementation process, but low-cost high-performance device straight hair design is still a need to continue research and discussion. HOLTEK will provide more competitive advantage for the straight hair of the IC design as well as the related development and design program.
     
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