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作者 beagle 在 PTT [ Electronics ] 看板的留言(推文), 共1245則
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3F推:我還以為電子工程師起薪本來就是 40000-45000 左右 @.@12/25 11:29
4F→:我學資工的... 不太清楚...12/25 11:29
1F→:用什麼程式語言也沒講...12/24 17:39
10F→:我看過的書都避而不談廢液的事12/22 01:49
1F推:http://0rz.tw/c55cT 大概是這樣的東西, 這個是半成品套件12/19 22:55
2F→:大約 700~1000 左右吧, 我沒用過, 聽說很容易壞...12/19 22:56
4F→:我自製過 printer port 版, 用一顆 buffer IC (74HC373)12/19 22:57
5F→:和一個 PC 用 power supply 供應 +5V 就可以了...12/19 22:58
6F→:不過那個難度我只能說初學者應該是做不來...12/19 22:58
7F→:因為硬體雖然簡單, 燒錄軟體卻得自己寫...12/19 23:00
9F→:跟我做的電路不相容啊 :~~~~12/19 23:01
13F→:電路圖我丟了, 後來我自己做了從 RS-232 傳訊號給 89S5212/19 23:45
14F→:然後再叫 89S52 去燒另一顆 89S52 ...12/19 23:46
15F→:的確有可能是弄錯 pin12/19 23:46
18F→:那最早的 89C2051 要怎麼燒錄呢? bootstrap 也是個問題12/20 01:59
19F→:對了, 現在 Atmel 出了新的 AT89S2051, 但台灣還沒賣的樣子12/20 02:01
26F→:現在的 USB -> Printer Port 轉接線不能直接用在燒錄器上12/20 11:30
27F→:多半是只能接 Printer, 連 Scanner 都不行...12/20 11:30
28F→:我今年新買的電腦就沒有 Printer Port, 傷腦筋中...12/20 11:31
29F→:Y 大可以推薦一下 ISP 的 8051 型號嗎? Atmel 有點貴...12/20 11:32
9F推:也許買現成套件半成品讓國中生做會比較容易12/18 17:18
4F推:用來量左右手之間的電阻大, 還是額頭和腳之間的電阻大12/16 15:55
4F推:的確有 8051 based embedded system, 不過不算 "小電路"12/14 17:31
5F→:目前 8051 尚未褪流行, 還是有不少電器裡面是 8051 核心12/14 17:33
1F推:我在 100MHz 左右用過 SMD 陶瓷晶片電容沒有問題...12/12 19:11
2F→:可是 1GHz 就沒有親手試過...12/12 19:11
7F推:這種頻率當然能用電子元件啊,不然手機1.8GHz的PLL要怎麼做12/13 02:17
8F→:呃, 1G MHz 就有點難...12/13 02:17
9F→:波長 300nm 已經是紫外線了...12/13 02:20
5F→:感謝,看來我的劍術還要磨鍊一下,我也是用SMD特細烙鐵頭12/12 10:36
1F→:tip=left, ring=right, sleeve=ground (照內中外的順序)12/11 16:13
5F→:嗶嗶檔, 插個耳機插頭上去, 內中外 pinout 如我推文那樣12/11 16:53
6F→:舊插座/電路板也用一樣的方法去量出來12/11 16:54
7F→:有一次換料, 插座的外型和腳位看起來是完全一樣12/11 16:55
8F→:結果誰知道 pinout 只有 GND 一樣, 其他三個完全不同12/11 16:56
9F→:害我量 left, right, detect 量到快抓狂...12/11 16:56