Question: Who founded the company Dell , that uses pointing sticks that come in the colors blue , black or gray ?

text: Pointing stick
Naming and brands

A pointing stick (or nub) is a small joystick used as a pointing device typically mounted centrally in a computer keyboard. Like other pointing devices such as mice, touchpads or trackballs, operating system software translates manipulation of the device into movements of the pointer or cursor on the monitor. Unlike other pointing devices, it reacts to force or strain rather than to gross movement, so it is called an isometric[clarification needed] pointing device. IBM introduced it commercially in 1992 on its laptops, under the name TrackPoint. The pointing stick senses applied force by using two pairs of resistive strain gauges. A pointing stick can be used by pushing with the fingers in the general direction the user wants the cursor to move. The velocity of the pointer depends on the applied force so increasing pressure causes faster movement. The relation between pressure and cursor or pointer speed can be adjusted, just as mouse speed is adjusted. On a QWERTY keyboard, the stick is typically embedded between the G, H and B keys, and the mouse buttons are placed just below the space bar. The mouse buttons can be operated right-handed or left-handed due to their placement below the keyboard along the centerline. This pointing device has also appeared next to screens on compact-sized laptops such as the Toshiba Libretto and Sony VAIO UX.
Name Brand Current Models Past Models Color
Acer FineTrack None TravelMate 6410 , 6460 , 6492 , 6492G , 6592 , 6592G , 6593 Green
Asus SensePoint ASUS pro B8230UA S200 , S200N , S300N ?
Casio ?  Cassiopeia Fiva MPC series
Dell TrackStick , Dual Point Latitude : 5490/5495 , 5590 , 7490 Precision : 3530 , 5530 , 7530 , 7730 Latitude : 13 : E4300 , E4310 , E6320 , E6330 ; 14 : E5400 , E5410 , E5420 , E5430 , E5440 , E5450 , E5470 , 5480 , E6420 , E6430 , 6430u , E7440 , E7450 , E7470 , 7480 ; 15 : E5530 , E5540 , E5550 , E5570 , 5580 , E6500 , E6510 , E6520 , E6540 , Retro Latitude : D400 , D410 , D420 , D430 , D600 , D610 , D620 , D630 , D800 , D810 , D820 , D830 , XT ; Precision : M2300 , M2400 , M4300 , M4400 , M4500 , M4600 , M4700 , M4800 , M6700 , M6800 , M6400 , M6500 , 3510 , 3520 , 5510 , 5520 , 7510 , 7520 , 7710 , 7720 ; Inspiron : 4000 , 8100 , 8200 , 8600 , 9100 ; L Blue , black or gray
Elonex Mouse emulator Elonex ONE None None
Fujitsu StickPoint , QuickPoint None Lifebook T2010 , T2020 , S7110 , S7210 , S7220 , B2400/2500/2600 series , E8310 ( optional ) , E8410 ( optional ) , E8420 ( optional ) , U1010/U810/U50 , U820/U2010 , P1100/1500/1600 series , P1620 , P1610 , P1630 , P2120 , Black or blue
GPD ? None Pocket 1 ?
HP PointStick All EliteBooks excluding 1000 series and Folio ; Some ZBooks excluding Studio series ; ProBook 6450b , 6455b & 6550b All EliteBooks excluding 1000 series ; all models ending with p or w ; all models starting with nc , nw or c ; 6445b ( optional ) , 6545b ( optional ) , tc4200 , tc4400 ; Presario models starting with v , 8500 Black , orange or blue ( older models )
Lenovo ( formerly IBM ) TrackPoint All ThinkPads , excluding chromebooks ; Travel Keyboard with Ultranav Most ThinkPads , Space Saver II , Model M13 , Model M4-1 , Trackpoint IV , Trackpoint USB Keyboard , TransNote , Trackpoint Mouse Red
NEC NX Point None EasyNote MX45 , MX65 , S5 None
Nintendo C-Stick New Nintendo 3DS , New Nintendo 3DS XL and New Nintendo 2DS XL None Gray
Samsung Pointing stick Series 6 , Ativ Q Series 4 All colors
Sony Pointing stick Sony PS3 Wireless Keyboard Sony Vaio Duo 11 , Sony Vaio P series , BX series , C1 series , U8 series , UX series None
Sprintek FlexPoint SK8702/SK8703 for Laptop/Tablet PC/Netbook/Industrial Keyboard None None
Toshiba AccuPoint Tecra R Series , Z Series and W Series , Portege Z Series and R Series Portégé ( not current models 06/2007 ) , 300-7000 series , T3000 series ; Tecra series 500-9000 , A7 , A8 , A9 , A10 , A11 , M2 , M5 , M9 , M10 , M11 , S Series ; Satellite Pro series 400-4000 , T2000 ; Satellite 100-4000 series , Libretto 50CT , 70CT , 100CT Green , blue
Unicomp Pointing stick EnduraPro ( for desktop ) On-The-Stick , Mighty Mouse Red