не работает ch:=readkey;

uses crt;
var ch:char;
begin
ch:=readkey;
write(ch,ch,ch);
writeln
end.

uses crt, graphABC;
var x,y:integer;
ch: char;
begin
x:=100;
y:=25;
circle(10,y,10);
ch:=readkey;
case  ch of
#25: circle(10,y,10);
#26: circle(20,10,15);
#27: circle(x,20,40);
end;
//writeln('!!!!!!!!!!!!!!!!!!');
end.

uses graphabc;
var x,y:integer;
    f:boolean;
procedure klavisha(key:integer);
begin
case key of
VK_Up:if y>30 then y:=y-10;
VK_Down:if y<windowheight-30 then y:=y+10;
VK_Left:if x>30 then x:=x-10;
Vk_Right:if x<windowwidth-30 then x:=x+10;
Vk_Escape:begin
          CloseWindow;
          f:=false;
          end;
end;
end;
procedure sharic;
begin
setbrushcolor(clBrown);
circle(x,y,20);
end;
 
begin
f:=true;
x:=windowwidth div 2;
y:=windowheight div 2;
lockdrawing;
repeat
clearwindow;
onkeydown:=klavisha;
sharic;
sleep(50);
redraw;
until not f;
end.