28123 Parallax Inc, 28123 Datasheet - Page 236
![TEXT WHAT'S A MICROCONTROLLER](/photos/6/49/64955/mfg_28123_sml.jpg)
28123
Manufacturer Part Number
28123
Description
TEXT WHAT'S A MICROCONTROLLER
Manufacturer
Parallax Inc
Type
Programmingr
Datasheet
1.28123.pdf
(340 pages)
Specifications of 28123
Style
Book
Title
What's a Microcontroller?
Contents
Whats a Microcontroller? Text
Product
Microcontroller Accessories
Core Processor
PIC16C57c
Flash
128 Bytes
Operating Supply Voltage
9 V
Board Size
31 mm x 16 mm
Lead Free Status / RoHS Status
Not applicable / Not applicable
- Current page: 236 of 340
- Download datasheet (6Mb)
If you’ve ever heard a singer practice his/her notes by singing the Solfege, “Do Re Mi Fa
Sol La Ti Do”, the singer is attempting to match the notes that you get from striking the
white keys on a piano keyboard. These white keys are called natural keys. A black key
on a piano can either be called sharp or flat. For example, the black key between the C
and D keys is either called C-sharp (C
flat depends on the particular piece being played, and the rules for that are better left to
the music classes.
C6 D6 E6 F6 G6
C
D
or
6
#
6
b
D
or
E
6
#
6
b
Figure 8-3: Rightmost Piano Keys and Their Frequencies
G
F
or
6
#
6
b
G
6
#
or
A
6
b
A6
#
A
B
) or D-flat (D
6
#
or
6
b
B6
C7
C
D
7
#
or
7
b
D7
b
). Whether a key is called sharp or
D
or
E
7
#
7
b
E7 F7 G7
G
F
7
#
or
7
b
G
A
7
#
or
7
b
A7 B7
A
B
7
#
or
7
b
C8
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