The storage area of 200mW green Laser Pointer should be extended more

The design uses a new generation of Siemens GSM wireless communication module TC35, the module's operating voltage of 3.3 ~ 5.5V, can work in 900MHZ/1800MHZ two bands, comes with RS232 communication interface, a PC can be easily , even single-chip machine communication, security, and reliable system solutions to achieve the data, voice, SMS and fax. Which, due to a short message with a simple, low cost communication, confidentiality, and directly facing the user's mobile phone and without geographical restrictions, etc., is currently the most widely used means of communication [2]. The alarm system, the user's 50mW green laser pointer mobile phone as a receiving terminal, headed in alarm occurs, the phone will automatically receive a message from the intelligent alarm system, alarm messages, this can real-time, reliable and efficient remote alarm. As HRH GSM Modem GSM engine embedded high reliability (GSM Cellular Engine) and 51 single-chip system (MCS51), a standard serial interface and a streamlined user interface protocol software for GSM communications standard from complex analysis and debugging freed, easy to use, and the public network data transmission with a wide range of communications (GSM network basically covers the whole country), transmission and stability, and reliability. Therefore, this design uses HRH GSM Modem to communicate. DS12887 is made using CMOS technology, the clock chip and the external crystal required set of lithium-related circuitry in the chip. DS12887 chip design using the clock circuit Needless to any external circuit and has a good computer interface. The two parties are discussing the result of manufacture supervision of green laser pointer.

The disassembly operation of 100mW green laser pointer should be performed carefully. AT89S52 is a low-power, high-performance CMOS8-bit microcontroller with 8K in-system programmable Flash memory. Using Atmel's high density nonvolatile memory technology, manufacturing, and industrial 80C51 instructions and pin-compatible products. On-chip Flash allows the program memory in-system programmable, also suitable for conventional programmer. On a single chip, with a neat 8-bit CPU and in-system programmable Flash, making AT89S52 for many embedded control applications to provide highly flexible, super-effective solution. AT89S52 provides the following standard features: 8k Bytes Flash, 256 bytes RAM, 32 bit I / O port lines, watchdog timer, two data pointers, three 16-bit timer / counters, a six-vector two-level interrupt structure, full-duplex serial port, on-chip oscillator and clock circuitry. In addition, AT89S52 static logic operations can be reduced to 0Hz, supports two software selectable power saving mode. Idle mode, CPU stopped, allowing the RAM, timer / counters, serial port, interrupt to work. Power failure protection mode, RAM contents are preserved, the oscillator is frozen, single-chip all work stopped until the next interrupt or hardware reset. The storage area of 200mW green Laser Pointer should be extended more.