 |
We intentionally left this specification with failures (for demonstration purpose) |
The HP-35 was HP's first pocket calculator. It was introduced at a time when most calculators had only the four basic functions. The HP-35 was the first pocket calculator with transcendental functions, and the first with RPN.
The following specifications have been derived from the instructions printed on the back of the calculator. (Image from http://www.hpmuseum.org/hp35.htm
)
Low battery lights all decimal points.
| eg.Calculator |
| volts |
watts() |
points() |
| 3.75 |
.500 |
false |
| 3.60 |
.500 |
false |
| 3.45 |
.500 |
false |
| 3.30 |
.500 |
true |
Improper operations flash display. Press clx
| eg.Calculator |
| key |
x() |
flash() |
| 100 |
100 |
false |
| enter |
100 |
false |
| 0 |
0 |
false |
| / |
0 |
true |
| clx |
0 |
false |
clx clears the display.
| eg.Calculator |
| key |
x() |
y() |
z() |
t() |
| 100 |
100 |
|
|
|
| enter |
100 |
100 |
|
|
| enter |
100 |
100 |
100 |
|
| enter |
100 |
100 |
100 |
100 |
| clx |
0 |
100 |
100 |
100 |
clr clears all registers.
| eg.Calculator |
| key |
x() |
y() |
z() |
t() |
| 100 |
100 |
|
|
|
| enter |
100 |
100 |
|
|
| enter |
100 |
100 |
100 |
|
| enter |
100 |
100 |
100 |
100 |
| clr |
0 |
0 |
0 |
0 |
chs changes sign of display. May be used as the first entry when entering negative numbers.
| eg.Calculator |
| key |
x() |
y() |
| 100 |
100 |
0 |
| chs |
-100 |
0 |
| chs |
100 |
0 |
| enter |
100 |
100 |
| chs |
-0 |
100 |
| 100 |
-100 |
100 |
eex causes next entries to become the exponent of x. For negative expoinents chs must precede digits.
The operational stack consistes of four registers (x, y, z and t). A fifth register (s) is used for constant storage. The stack is automatically raised by an entry into x or by rcl unless the entry or rcl immediately follows clx, sto or enter. Follwing any trig function z is duplicated into register t.
All angles are in degrees.
Example (2+3) * (4/5) / sin(30) * (4^-1.5) = 1.0000
| eg.Calculator |
| key |
x() |
y() |
| 2 |
2 |
|
| enter |
2 |
2 |
| 3 |
3 |
2 |
| + |
5 |
|
| 4 |
4 |
5 |
| * |
20 |
|
| 5 |
5 |
20 |
| / |
4 |
|
| 30 |
30 |
4 |
| sin |
.5 |
4 |
| / |
6 |
|
| -1.5 |
-1.5 |
8 |
| enter |
-1.5 |
-1.5 |
| 4 |
4 |
-1.5 |
| x^y |
.125 |
8 |
| * |
1.0000 |
|
