這台是年代久遠 Microscience International Corporation 硬碟機(HDD / Hard Disk Drive),型號 LR56431 HH612B,容量祇有 10MB,比現在 USB 盤更少!屬於早期的 5.25吋硬碟機(Winchester)設計,2條電纜 MFM / ST412介面,生產日期 1484(估計在 1984年 14周),生產廠商是 Microscience International Corporation,美國製造(Made in U.S.A),硬碟機尺寸 212mm × 150mm × 40 / 42.6mm,整個硬碟機重量是 1592g(1.592kg)。
Microscience HH612B 10MB 硬碟機(Hard Disk Drive) |
Microscience HH612B 10MB 硬碟機(Hard Disk Drive)的正面 |
Microscience HH612B 10MB 硬碟機(Hard Disk Drive)的背面 |
Microscience HH612B 10MB 硬碟機(Hard Disk Drive)的右側面 |
Microscience HH612B 10MB 硬碟機(Hard Disk Drive)的左側面 |
Microscience HH612B 10MB 硬碟機(Hard Disk Drive)的頂部 |
Microscience HH612B 10MB 硬碟機(Hard Disk Drive)的底部 |
Microscience HH612B 11MB 硬碟機(Hard Disk Drive)的標籤 |
Signal
|
Pin No
|
Pin No
|
Pin Out
Discription
|
GROUND
|
1
|
2
|
~HD
SLCT 3 (or ~Reduced Write Current)
|
GROUND
|
3
|
4
|
~HD
SLCT 2
|
GROUND
|
5
|
6
|
~WRITE
GATE
|
GROUND
|
7
|
8
|
~SEEK
CMPLT
|
GROUND
|
9
|
10
|
~TRACK
0
|
GROUND
|
11
|
12
|
~WRITE
FAULT
|
GROUND
|
13
|
14
|
~HD
SLCT 0
|
Key
(no pin)
|
15
|
16
|
Reserved
|
GROUND
|
17
|
18
|
~HD
SLCT 1
|
GROUND
|
19
|
20
|
~INDEX
|
GROUND
|
21
|
22
|
~READY
|
GROUND
|
23
|
24
|
~STEP
|
GROUND
|
25
|
26
|
~DRV
SLCT 0
|
GROUND
|
27
|
28
|
~DRV
SLCT 1
|
GROUND
|
29
|
30
|
~DRV
SLCT 2
|
GROUND
|
31
|
32
|
~DRV
SLCT 3
|
GROUND
|
33
|
34
|
~HD
SLCT 3 (or ~Reduced Write Current)
|
20-Pin 連接器接腳定義(Data Connector Pinout):
Signal
|
Pin No
|
Pin No
|
Pin Out
Discription
|
~DRV
SLCTD
|
1
|
2
|
GROUND
|
No
connection
|
3
|
4
|
GROUND
|
No
connection
|
5
|
6
|
GROUND
|
No
connection
|
7
|
8
|
Key
(no pin)
|
No
connection
|
9
|
10
|
No
connection
|
GROUND
|
11
|
12
|
GROUND
|
+MFM
WRITE
|
13
|
14
|
-MFM
WRITE
|
GROUND
|
15
|
16
|
GROUND
|
+MFM
READ
|
17
|
18
|
-MFM
READ
|
GROUND
|
19
|
20
|
GROUND
|
4-Pin 電源連接器接腳定義(Power Connector Pinout):
Signal
|
Pin No
|
Pin Out
Discription
|
Pin 1
|
+12 V
DC
|
DC
+12V
|
Pin 2
|
+12 V
return
|
GROUND
|
Pin 3
|
+5 V
return
|
GROUND
|
Pin 4
|
+5 V
DC
|
DC +5V
|
品牌型號:Microscience International Corporation 10MB 硬碟機(Hard Disk Drive / Winchester)
型號:LR56431 HH612B
Capacity:Formatted 10 MB
Form Factor:5.25" × 1/2H / HH (Half Height)
Disks:2
Data Heads:4
Cylinders:306
Sectors/Track:17
Seek Times:Average = 99 ms
Controller:MFM / ST412
Data Transfer Rate:0.625 MB/S Internal / External
Precompensation Landing Zone:305
Bytes/Sector:512
Record Method:MFM
MTBF:36,000 hr
Interface:ST412
Voltage Required:+5V/+12V
顏色:黑色
尺寸:212mm × 150mm × 40 / 42.6mm(D×W×H)
重量:1592g(1.592kg)
產地:美國製造(Made in U.S.A)
上市日期:估計 1984年
參考售價:US$879 (1984年)
相關網址:
※ Microscience HH612B 10MB 硬碟機(Hard Disk Drive)- 拆解(二)
※ Microscience HH612B 10MB 硬碟機(Hard Disk Drive)主控制板 - 拆解(三)
※ Microscience HH612B 10MB 硬碟機(Hard Disk Drive)電源控制板 - 拆解(四)
※ Microscience HH612B 10MB 硬碟機(Hard Disk Drive)前面板控制板 - 拆解(五)
2020年 5月 1日 天氣報告
氣溫:24.3度 @ 20:20
相對濕度:百分之 85%
天氣:大致多雲
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