Product Description<br> <br><br>STC15F104E/W learning board designed for 51 single chip microcomputer  the board of common resources  to meet the needs of most of the study  the following details are as follows:<br>1 all IO ports all lead to<br>The 2 board contains a single chip microcomputer control LED  connected to the IO port P3.2  can be used for IO port output  PWM wave modulation and other experiments<br>3 plate load one chip switch  connected to the P3.3 port IO  can be used for IO port input  interrupt and other experiments<br>The 4 IO is connected outside patch switch with LED does not affect the normal use of the IO port<br>5 board TTL level serial port  RXD (connected to P3.0) and TXD (connected to P3.1) can be used for STC download program / serial port on the lower computer communications (need to cooperate with the timer) and IO port input and output  etc.<br><img src="//gdetail.image-gmkt.com/030/717423496/2016/4/84d614a6-41a4-4856-9596-6dd413a24a79.jpg"  width="796" height="741" onerror="this.src='http://gdetail.image-gmkt.com/030/717423496/2016/4/84d614a6-41a4-4856-9596-6dd413a24a79.jpg'; $(this).attr('onerror'，'');" ><br><br>Packaging Details<br>Unit Type: piece Package Weight: 0.100kg (0.22lb.) Package Size: 20cm x 20cm x 20cm (7.87in x 7.87in x 7.87in)