Datasheet legend
Ab/c: Fractions calculation
AC: Alternating current
BaseN: Number base calculations
Card: Magnetic card storage
Cmem: Continuous memory
Cond: Conditional execution
Const: Scientific constants
Cplx: Complex number arithmetic
DC: Direct current
Eqlib: Equation library
Exp: Exponential/logarithmic functions
Fin: Financial functions
Grph: Graphing capability
Hyp: Hyperbolic functions
Ind: Indirect addressing
Intg: Numerical integration
Jump: Unconditional jump (GOTO)
Lbl: Program labels
LCD: Liquid Crystal Display
LED: Light-Emitting Diode
Li-ion: Lithium-ion rechargeable battery
Lreg: Linear regression (2-variable statistics)
mA: Milliamperes of current
Mtrx: Matrix support
NiCd: Nickel-Cadmium rechargeable battery
NiMH: Nickel-metal-hydrite rechargeable battery
Prnt: Printer
RTC: Real-time clock
Sdev: Standard deviation (1-variable statistics)
Solv: Equation solver
Subr: Subroutine call capability
Symb: Symbolic computing
Tape: Magnetic tape storage
Trig: Trigonometric functions
Units: Unit conversions
VAC: Volts AC
VDC: Volts DC
Years of production: 1996-1997 Display type: Dot matrix
New price:  
Display color: 256 grayscale
    Display technology: LCD
Size: 3½"×7½"×1" Display size: 640×240
Weight: 18 oz
    Entry method: N/A
Batteries: 2×"AA" + 1×CR2032 Advanced functions: N/A
External power: 5.25 VDC Memory functions: N/A
I/O: RS-232, infrared, PCMCIA, CompactFlash    
    Programming model: Win32 API
Precision: N/A Program functions: N/A
Memories: 4 MB
Program display: N/A
Program memory: N/A
Program editing: N/A
Chipset:   Forensic result:  

hp320lx.jpg (50765 bytes)The 300-series machines represented Hewlett-Packard's first entry into the field of Windows CE compatible handheld computers. With only 4 MB of RAM, a low-contrast grayscale LCD with optional backlighting, and only a 44 MHZ Hitachi CPU, the 320LX is a somewhat underpowered yet useful machine. Originally produced with Windows CE 1.0, shortly after its introduction HP released a user-installable operating system ROM upgrade to Windows CE 2.0.

Although the 320LX I have in my possession was produced only about 4 years ago, disappointingly HP no longer provides satisfactory support for this product. In particular, the ROM upgrade is no longer available.

Not long after the 300-series began, HP introduced a new product line name, Jornada, which is used to this date as the brand name for their handheld/pocket PC product line.

Windows CE 1.0 may be the first version of this modular operating system, but nevertheless it is quite capable. The development system is based on version 5 of Microsoft's Visual C++, and most essential features of the Win32 API are present. As a matter of fact, I was able to port some of my Win32 and Windows CE development projects to version 1.0 with relative ease, including my Pocket TELNET.

Unfortunately, in one way Windows CE machines represented a step backward in the evolution of pocket computers: these devices are not end-user programmable! That is, no built-in means exist for end users to create simple programs or applications on this device; development is performed on desktop computers using cross-platform tools.