音樂型態

1. Slow Soul / 8 Beat

2. Soul / 16 Beat

3. Folk Rock

4. Slow Rock

5. Waltz

6. 跑馬式節奏

7. 三指法

8. Groove Funk 放克

9. Bossa Nova

10. 十二小節式的藍調伴奏模式

基礎樂理

音階(Scale)
依照音名,由低至高, 或由高至低。

音程(Intervals)
兩個音結合一起發出聲音的兩音距離(單位為度)。
大調音階的音程：全全半全 全全半
小調音階的音程：全半 全全半全 全

和弦
1. 以某一音為和弦主音(Root), ie. C
2. 加上比主音高3度的音(可以為大3或小3度), 稱和弦第三音, ie. (C + E or C + Eb )
3. 加上比主音高5度的音(可以為增5或減5度), 稱和弦第五音, ie. (C + E or C + Eb )
4. 構成和弦的音程組成

接著推導和弦的組成
[A] 三和弦(組成音有三個)
1. 大3和弦(major)
=主音+大3度+小3度 (此小3是大3後再加上的, 與先前的高5是相同的音)
2. 小3和弦(minor)
=主音+小3度+大3度
3. 增和弦(Augment)
=主音+大3度+大3度
4. 減和弦(Diminish)
=主音+小3度+小3度

[B]七和弦
1. 大7和弦(major7)
=主音+大3度+小3度+大3度
2. 小7和弦(minor7)
=主音+小3度+大3度+小3度
3. 屬7和弦(dominant 7)
=主音+大3度+小3度+小3度

USB

USB 元件簡介
分為Host Controller, Hub and Device

Host controller
Also known as the root, the root tier, or the root hub,
the host controller can be built into the motherboard of the computer

or installed as an add-in CardBus or PCI card in the computer

to gain additional ports and bandwidth.
The host controller controls all traffic on the bus and also functions as a hub.

Hub
Provides multiple ports, for attaching devices to the USB bus.
Hubs are also responsible for detecting devices that are plugged in or unplugged,
and for providing power for attached devices. Hubs are either bus-powered,
drawing power directly from the USB bus, or self-powered, drawing power from an external AC adapter.Bus-powered hubs are capable of providing 100 milliamperes (mA) of power per port for attached devices, and they can provide a maximum of four ports for devices to be plugged into. Self-powered hubs, on the other hand, typically provide 500 mA of power per port,
and they can provide more than four ports. Hubs can be stand-alone devices, or they can be integrated into other devices such as keyboards and monitors.

Device
A USB device, which is attached to the bus through a port. A USB device can be any kind of peripheral device,
such as a keyboard, mouse, game controller, printer, and so forth.
Certain USB input devices such as keyboards and mice require only 100 mA of power to function. Thus, they can be plugged into both bus-powered and self-powered hubs, in addition to being plugged directly into a root port. Other devices such as printers, scanners, storage devices, and video-conferencing cameras might require 500 mA of power to function. These kinds of devices can only be plugged into root ports or self-powered hubs. If the device requires more than 500 mA of power, it includes a wall plug provided by the vendor for power.

[Ref] http://technet.microsoft.com/en-us/library/bb457107.aspx


USB的三種速度
1. low speed: 1.5Mbps
2. full speed:12Mbps
3. high speed: 480Mbps


         

You will notice we have not included speed identification for High Speed mode. High speed devices will start by connecting as a full speed device (1.5k to 3.3V). Once it has been attached, it will do a high speed chirp during reset and establish a high speed connection if the hub supports it. If the device operates in high speed mode, then the pull up resistor is removed to balance the line.

常用IC封裝

TQFP (Thin Quad Flat Pack )

QFN (Quad Flat No leads )

DIP (Dual in-line package)

SOP (Small-Outline Package)

TSSOP (Thin Small-Outline Package)

SOT (Small Outline Transistor)

PLCC (Plastic leaded chip carrier)

reference：

http://www.shbear.com/2/lib/200906/05/20090605093.htm

[讀書心得]頂尖記憶法

偶然在圖書館翻到一本教你如何記憶的書籍,
介紹了一些幫助記憶的技巧, 以下做歸納整理

1.諧音法
利用諧音法記憶中國的歷史朝代,
=>瞎商周春秋, 站在琴上, 七洞汗衫, 七洞見男背,
睡躺無聊, 背誦經文, 難誦完, 明天醒面腫

2.身體椿位
將身體的12個部位拿來記憶12個星座的順序
1額頭(牡羊),2眼睛(金牛),3鼻子(雙子),4嘴巴(巨蟹),5耳朶(獅子),6脖子(處女),
7雙手(天秤),8肚子(天蠍),9背部(射手),10大腿(魔羯),11小腿(水瓶),12腳趾(雙魚)

3.數字密碼
利用每個數字代表一個名詞, 用來記憶較短的數字列或成語,
書上有教利用1~36來記憶36記的聯想法

4.地點椿位
用自己熟悉地方的顯著物, 將每個物體編號, 按照順序的回想起每個位置
這方式可以記憶大量無邏輯的數字列, 甚至是一副撲克牌的順序