文字指令
Text Block

此指令可以將字元組合成文字,這些都是文字的例子: abcd23, Dog, john!. 文字可以包含數字跟特殊字元或是標點符號.文字的使用是顯示在NXT螢幕上.
This block can add together groups of characters called text. These are all pieces of text: abcd23, Dog, john!. Text can contain numbers and even special characters like symbols and punctuation marks. Text is important because it can be displayed on the NXT’s screen.

像這樣的句子,是一段由短文字組成的長句.文字指令可以組合三個較短的文字而成為像句子般的長句.
A sentence, like this one, is a long piece of text, while each of its individual words is a smaller piece of text. The Text block can take three smaller pieces of text and put them together to make a large piece of text like a sentence.

如果輸入A是"這個",輸入B與C分別是"程式是","很棒!". 則結果會是組合的句子"這個程式是很棒!" 注意文字B包含有兩個空白來讓最後組成的句子看起來是正確的.
If input A is the piece of text “This” and inputs B and C are the pieces of text “ program is “ and “great!”, the resulting, combined piece of text would be “This program is great!” Notice that text B (“ program is “) includes two blank spaces that are important if the final sentence is to come out right.

NXT產生的數字並非文字,是不能顯示在NXT螢幕上,必須使用數字轉文字指令來轉換並加上用文字指令來組合成下列句子: "這個馬達轉6圈", "這個光源感應器讀到35%的光量",這樣轉換後的文字都是可以顯示在NXT螢幕上.
Numbers generated by the NXT are not ordinarily text; they can’t be displayed directly on the NXT’s screen. If you use another programming block called Number To Text, you can convert a number into text. This would allow you to use a Text block to create larger pieces of text that include numbers read from sensors like: “The motor turned 6 times” or “The light sensor reading is 35%.” Both of these pieces of text can be displayed on the NXT’s screen.

三個輸入文字可以是鍵盤輸入或是資料線輸入.而輸出文字會經由資料線輸出.
The three pieces of input text can be typed in or supplied dynamically by data wires. The output text will be sent out by data wire.

1. 當指令放在序列軸上時,資料集線器就會自動打開.從資料集線器的左邊可以連結資料線來動態地輸入三個文字.而輸出的文字就會從右上方的輸出連接埠傳送出.如果需要輸出文字時,資料集線器右邊的三個輸出也可以傳遞出任何輸入的數字.
   
   The data hub will open automatically when the block is attached to a sequence beam. The three pieces of input text can be supplied dynamically by data wires connected to the plugs on the left side of the data hub. The output text will be sent from the plug on the right at the top. The three other output plugs on the right will pass any input text information through to other blocks, if necessary.

設定文字指令
Configuring the Text Block

1. 三個輸入文字(A, B和C)可以是鍵盤輸入或是資料線輸入.注意輸入的空白格也會一併輸出.
   The three pieces of input text (A, B, & C) can be typed in or supplied dynamically by data wires. Remember that spaces are important and will be added to the output text only if you include them in the input text.

設定文字指令的資料集線器
Configuring the Text block’s Data Hub

用資料線可以任意地用來控制文字指令.(從其他指令的資料集線器到文字指令的資料集線器).
You can control the Text block dynamically by connecting data wires (from other blocks’ data hubs) to the Text block’s data hub.

把指令放在工作區上後,可以按圖示的左下角來打開資料集線器.
Open a block’s data hub by clicking the tab at the lower left edge of the block after it has been placed on the work area.

連接到集線器左邊連接埠的資料線是屬於負責傳遞資料進入指令中,而要從指令送出資料時,則須從集線器的右邊連接埠連接資料線.
Data wires carrying input information to a block are connected to the plugs on the left side of its data hub. Data wires carrying output information are connected to the plugs on the right side.

[A]輸入連接埠 [A] Input plug
[B]輸出連結部 [B] Output plug
[C]數字資料線(黃) [C] Number data wire (yellow)
[D]邏輯資料線(綠) [D]Logic data wire (green)
[E]文字資料線(橘) [E]Text data wire (orange)
[F]無效資料線(灰) [F]Broken data wire (gray)

資料由輸入端傳至傳出端
Passing from the input plug to the output plug

如果輸入連接埠有對應的輸出連接埠(請參閱 A 以上)時,那麼輸入的資料就會原封不動地傳遞到輸出連接埠.在這樣的情況下, 如果輸入連接埠連著資料線,那麼就只能使用輸出連結埠來做連結. 也就是說,當連結輸出連接線到這樣的輸出連接埠,而不透過相對應的輸入資料線時,就會讓該輸出連接線呈現無效的狀態.
If an input plug has a corresponding output plug (see A above), the input data will pass through from the input plug to the output plug without being changed. In this case, you can only use the output plug if the input plug is connected to an input data wire; connecting an output data wire to such an output plug without a connected input data wire will cause the output data wire to be “broken” (and colored gray).

特定的資料型態
Data wire colors carry specific types of data

每條資料線都負責傳送特定資料.例如,一條從邏輯連接埠拉出的資料線則只能連結到另一個同屬邏輯連接埠的集線器上.
Each data wire carries a specific type of data between blocks. For example, if a data wire is dragged from a logic plug on a block’s data hub, it can only be connected to a logic plug on another block’s data hub. The chart below shows what kind of data each plug can accept or send out.

資料線顏色
Data wire colors

資料線依照特定的顏色作識別:黃色資料線傳送數值資料、綠色資料線傳送邏輯資料(真/偽)及橘色資料線傳送文字資料
Data wires are identified with specific colors: wires carrying number data are colored yellow, wires carrying logic data are colored green, and wires carrying text data are colored orange.

無效的資料線
“Broken” data wires

如果資料線連結到錯誤資料型態的連接埠時,則該資料線會呈現斷線無效狀態並以灰色表示.而有無效的資料線存在就無法下載程式.
If you try to connect a data wire to a plug of the wrong data type, the data wire will be broken (and colored gray). You will not be able to download your program if a data wire is broken.

點選無效的資料線時,在工作區右下方的幫助視窗中會看到無效的原因.
If you click a broken wire you can read why it is broken in the small help window in the lower right corner of the work area.

資料必須在連接埠的限制範圍內
Data must bewithin the possible range of the plug

如果資料線傳輸該連接埠資料範圍之外的資料時,該指令不是忽略資料就是轉成合理範圍內的資料.對那些只能接收少量輸入值的連接埠來說(例如,0,1,或2),該連結埠就會忽略超出範圍的數值.
If an input data wire transmits a value outside the possible range of the plug it is connected to, the block will either ignore the value or change it to a value within its range. For plugs that allow just a few input values (example: just 0, 1, or 2), the plug will ignore the input if a value arrives outside its range.

而對那些可以接收大量範圍輸入值(例如: 0~100)的連接埠來說,該連接埠就會將數值轉成可接受的範圍. 例如, 移動指令的動力連接埠接收到150的輸入值時,那麼移動指令就會轉成100(也就是動力連接埠的範圍內).
For plugs that accept larger input ranges (example: 0 – 100), the plug will force any input outside its range to fit. For example, if a Move block’s Power plug receives an input value of 150, the block will change the input value to 100 (i.e., a number within the Power plug’s range).

下表列出本資料集線器中各連接埠的特性
This chart shows the different characteristics of the plugs on the Text block’s data hub:

	連結埠 Plug	資料型態 Date Type	資料範圍 Possible Range	資料意義 What the Values Mean	連接埠例外說明 This Plug is Ignored When...
	A	文字 Text
	B	文字 Text
	C	文字 Text
	組合文字 Combined Text	文字 Text		組合文字A,B和C Combination of texts A, B, and C