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Anykeys shows which keys you press and you can press several at the same time. The last key pressed is shown in the lower left corner. In the emulators on the NumWorks site in Python shell only a few buttons on your emulator’s physical keyboard work: e.g. Tab (Toolbox), Enter (EXE), Shift, Backspace, Esc (Back), Alt+x (exp), Alt+v (var), Alt+e (EE), Alt+r (sqrt), Alt+p (pi), Alt+Shift+2 (**2), Alt+l (ln), Alt+o (log), ^ (power), Alt+s (sin), Alt+c (cos), Alt+t (tan), ,, ., 0-9, +, -, *, /, and the arrow keys, but of these, in ion, only Tab, Enter, Shift, Alt (Alpha), Backspace, ., 0-9, +, -, *, /, and the arrow keys work. The Back/Escape key interrupts the program.

None of the JavaScript emulator’s screen keys work with Anykeys. In the emulator for iPhone only the OK button works. It works well with the real calculator, but if you press many keys some non pressed keys might be added or removed; probably due to the keyboard matrix circuit.

On my UK keyboard in Linux these key combinations also work in the Python shell: AltGr+a (æ), AltGr+d (ð), AltGr+i (→), AltGr+o (ø), AltGr+p (þ), AltGr+q (@), AltGr+s (ß), AltGr+Shift+f (ª), AltGr+Shift+m (º), AltGr+Shift+q (Ω), AltGr+Shift+0 (°), AltGr+Shift+9 (±). All other UK keyboard keys work normally except: ¬, £, ^ (**),¹, ², ³, €, ½, ¾, ¡, ⅛, ¼, ⅜, ⅝, ⅞, ™, ¿.

Ideas for future improvements of ion in the NumWorks simulator using US/UK keyboard:

• , (comma) could be the , key.
• [ and ] could act as ( (leftparenthesis) ) (rightparenthesis) in ion.
• The Alt codes in Python shell could changed to direct key in ion, i.e. t could be tan, q could be x^2, i or j could be i, w could be x^y.
• ` or n could be the x,n,t key.
• = could be the OK key.
• ’ could be the Ans key.
• ; or v could be the var key in ion. It is now Alt+v in Python shell, but this doesn’t work in ion since Alt is Alpha.
• \ could be EE i.e. ·10^x.

import kandinsky as k
import time
import ion
def ds0(s,p):
  k.draw_string(s,p[0],p[1],"yellow","blue")
def ds1(s,p):
  k.draw_string(s,p[0],p[1],"blue","yellow")
def run():
  ks=dir(ion)
  del ks[:2]
  x,y=0,3
  cs=[]
  es=[]
  fr=k.fill_rect
  fr(0,0,320,240,"blue")
  for i in range(len(ks)):
    ks[i]=ks[i][4:]
    fr(x,y,20,19,"red")
    x+=1
    ds0(ks[i],(x,y))
    cs.append((x,y))
    es.append(eval("ion.KEY_"+ks[i]))
    if i<8:
      x+=320//8
      if i==7:
        x=0
        y+=20+10
    elif 26<=i:
      x+=320//5
      if (i-30)%5==0:
        x=0
        y+=20
    else:
      x+=320//6
      if (i-13)%6==0:
        x=0
        y+=20
        if i==25:
          y+=10
  ts=time.sleep
  ts(1)
  p="Press any keys!"
  ds1(p,((32-len(p))*10,11*18+3))
  ik=ion.keydown
  while 1:
    for i in range(len(ks)):
      if ik(es[i]):
        fr(0,11*18+3,170,18,"blue")
        ds1(ks[i],(0,11*18+3))
        ds1(ks[i],cs[i])
      else:
        ds0(ks[i],cs[i])
    ts(0.0001)
run()