IBM   International Business Machine であったり Big Blue であったり....

より正確な情報 は ITさんの 鍵人鍵盤寸評、Nogujuさんの Keyboard Mania
 Mattさんの IBM Enhanced Keyboard Model-M などを参照ください。

Trivia : Model M and F

XT 83 Key
PC/AT 84 Key

Weight; 2.8Kg
P/N 5640991
ID 380X N1797,   Date 47-1983
Fixed cable with a 15 Pins D-SUB connector.
Buckling Spring Technology
Capacitive switch
Not compatible with Windows PC
Weight; 3.0Kg
Old Terminal Keyboard
P/N 6110344,   Model F
ID L8983
Date 11JULY85
Fixed cable with a 5 Pins proprietary Plug,  
Buckling Spring Technology + Capacitive switch
Weight; 3.8
Kg
  Enhanced 101 Key Model M
P/N 1390401
Date 


Ordinal "M" with stabilizing spring underneath larger keys ( Enter key and + key at num pad. )
Enhanced 101 Key Model M
P/N  1388032
Date  02OCT87
Detachable cable,  2 piece key caps
Gray color model
Silver logo on a black aluminum plate
Weight; 2.2Kg
Enhanced 101 Key Model M 
P/N  1394946
Date  22NOV91
Detachable cable,  2 piece key caps
Gray color model
Silver logo on a round black plate
Weight; 2.2Kg
Enhanced 101 Key Model M
P/N  1390401
Date  13-03-87
  
 
Enhanced 101 Key Model M
P/N  1397957
Date  04-19-93,  Made in the USA

Black logo on Aluminum metal plate 
at the upper right corner  
  Enhanced 101 Key Model M
P/N   1392598
Date  03-12-87,  Made in the USA

En & Jp Katakana are printed on the key tops.  No Drain Holes.
Seems incompatible with usual PCs.  

Enhanced 101 Key Model M
P/N   1390680

Date  02MAR87   
Fixed cable with a strange 5 pin AT like plug.  No drain holes.
Strange characters are printed on the keys at the num pad section..
  
Seems incompatible with  Windows PCs.  
Enhanced 101 Key Model M
Soft touch keyboard

P/N   8184692,  1996  US Made.
Manufactured by Lexmark for IBM

Grease is added to every buckling springs in order to reduce clicking sound.
Enhanced 101 Key Model M
Quiet touch keyboard
P/N   71G4644
Date 10/9/95,   US Made.
Manufactured by Lexmark for IBM

Ouch!    Rubber spring 

Enhanced 101 Key, Model M
P/N  42H1292

Date 11-11-96
Buckling Spring Technology
Membrane switch
Fixed strait cable, PS/2 Plug
Two piece key top

  Enhanced 101 Key Model M
P/N   59G5980
Date  02-02-93

Manufactured by Lexmark
Enhanced 101 Key Model M
P/N  52G7753

Date  04-12-94,  Made in the USA
Special Model for WALT PC

Manufactured by Lexmark  
3153 Terminal Keyboard
P/N 42H0468 (  variation of M2 )
Buckling Spring Technology
Fixed cable with RJ-11 jack
84 Key Model M4-1 With TrackPoint II
P/N                   White
Rubber cup/Membrane contacts
Sold with PS/2e "Pizza  Box"
Enhanced 101 Key Model M5-1 With Trackball

P/N 1370478
Manufactured by Lexmark

Image of  Track Ball    Label
Enhanced 101 Key Model M5-2 With Trackball

P/N 92G7475
Manufactured by Lexmark
  Enhanced 101 Key Model M13 With Trackpoint II
P/N 
Manufactured by both Lexmark and MaxiSwitch
Enhanced 84 Key Space saver M
Enhanced 85 Key Space saver M

 

SEO [PR] おまとめローン Windows7 冷え性対策 動画 掲示板 レンタルサーバー ライブチャット SEO