Manufacturer: PHILIPS
Model: P255
AKA: electronic desk calculator
Year: ~1973
Display: None
Circuits:  
Dimensions: 390x325x130 mm
Power type: 220V
Origin:  
S/N:  
Owner:  

 

Feature  

Description 

Case:  

 

Color case:  

Beige

Color keyboard:  

Black

Weight:  

9000 g

Voltage selection:  

110/127/220/245V 50-60Hz 15W

Adapter:  

 

Power consumption:  

30 Watt

Working condition:  

5-45 Degrees C, max. 90% relative humidity.

Printed Circuit Boards (PCB's):  

 

Memories:  

2

Memories indication:  

 

Prog. steps:  

N/A

Decimal point handling:  

In addition and subtracting, fixed and manually adjustable to 7 pos.
(0, 2, 3, 4, 5, 6 or 7).
In multiplication, division, percentage and square root, the dec.point is
floating at input (up to 13 dec. can be entered) and fixed at output
(0, 2, 3, 4, 5, 6 or 7).

Rounding:  

The last digit of a product, quotient or square root is automatically rounded.

Calculation overflow indication:  

 

Input overflow indication:  

 

Divide by Zero indication:  

 

Square root of negative value indication:  

 

Negative value indication:  

 

Constant function:  

 

Calculation speed:  

 

Auto Power-off:  

No

Display details:  

 

Printer:  

Serial Mosaic, 4 lines/s, 14 digits + Sign + Symbols.
Roll: 57-63.5mm, external diameter: 60-85mm.
Ribbon: Black nylon, width = 8mm, length = 6m,
spool: like B40/2 (DIN 2103), however with a width of 8mm

Extra features/remarks:  

The P255 model incoporates the unique mosaic printer of the other P-models,
It permits the average speed of 4 lines/s.
The calulator can perform the four basic arithmetic functions and furthermore,
is provided with two accumulative stores of 14 digits capacity,
a percentage key, a square root key, a constant key and a 'change sign'-key.
The engraved key symbols correspond to the symbols printed on the tally strip,
so that every calculation can easily be traced afterwards.
The calculator is almost identical to the PHILIPS: P256,
which has three accumulative stores instead of two.

Initial price:  

 

Overall quality rate (1-10):  

 

OEM-copies:  

 

Other sources of info:  

 

Advertisements/Publications:  

 

 

Keyboard ^

 

 

Manual ^