> For the complete documentation index, see [llms.txt](https://open-rt.gitbook.io/open-surfacert/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://open-rt.gitbook.io/open-surfacert/surface-rt/hardware/gpios/decode-pin-number-to-letter.md).

# decode - Pin number to Letter

<table data-header-hidden><thead><tr><th width="108">Letter number</th><th width="115">dec range start</th><th width="111">hex range start</th><th> Letter</th></tr></thead><tbody><tr><td>Letter number</td><td>dec range start</td><td>hex range start</td><td> Letter</td></tr><tr><td>0</td><td>0</td><td>0x00</td><td>A</td></tr><tr><td>1</td><td>8</td><td>0x08</td><td>B</td></tr><tr><td>2</td><td>16</td><td>0x10</td><td>C</td></tr><tr><td>3</td><td>24</td><td>0x18</td><td>D</td></tr><tr><td>4</td><td>32</td><td>0x20</td><td>E</td></tr><tr><td>5</td><td>40</td><td>0x28</td><td>F</td></tr><tr><td>6</td><td>48</td><td>0x30</td><td>G</td></tr><tr><td>7</td><td>56</td><td>0x38</td><td>H</td></tr><tr><td>8</td><td>64</td><td>0x40</td><td>I</td></tr><tr><td>9</td><td>72</td><td>0x48</td><td>J</td></tr><tr><td>10</td><td>80</td><td>0x50</td><td>K</td></tr><tr><td>11</td><td>88</td><td>0x58</td><td>L</td></tr><tr><td>12</td><td>96</td><td>0x60</td><td>M</td></tr><tr><td>13</td><td>104</td><td>0x68</td><td>N</td></tr><tr><td>14</td><td>112</td><td>0x70</td><td>O</td></tr><tr><td>15</td><td>120</td><td>0x78</td><td>P</td></tr><tr><td>16</td><td>128</td><td>0x80</td><td>Q</td></tr><tr><td>17</td><td>136</td><td>0x88</td><td>R</td></tr><tr><td>18</td><td>144</td><td>0x90</td><td>S</td></tr><tr><td>19</td><td>152</td><td>0x98</td><td>T</td></tr><tr><td>20</td><td>160</td><td>0xA0</td><td>U</td></tr><tr><td>21</td><td>168</td><td>0xA8</td><td>V</td></tr><tr><td>22</td><td>176</td><td>0xB0</td><td>W</td></tr><tr><td>23</td><td>184</td><td>0xB8</td><td>X</td></tr><tr><td>24</td><td>192</td><td>0xC0</td><td>Y</td></tr><tr><td>25</td><td>200</td><td>0xC8</td><td>Z</td></tr><tr><td>26</td><td>208</td><td>0xD0</td><td>AA</td></tr><tr><td>27</td><td>216</td><td>0xD8</td><td>BB</td></tr><tr><td>28</td><td>224</td><td>0xE0</td><td>CC</td></tr><tr><td>29</td><td>232</td><td>0xE8</td><td>DD</td></tr><tr><td>30</td><td>240</td><td>0xF0</td><td>EE</td></tr></tbody></table>