<s>
The	O
Visual	B-Device
1050	I-Device
was	O
an	O
8-bit	O
desktop	O
computer	O
sold	O
by	O
Visual	O
Technology	O
in	O
the	O
early	O
1980s	O
.	O
</s>
<s>
The	O
computer	O
ran	O
under	O
the	O
CP/M	B-Application
operating	I-Application
system	I-Application
and	O
used	O
2	O
400KB	O
,	O
5¼	O
,	O
SSDD	O
,	O
96tpi	O
floppy	B-Device
disk	I-Device
drives	I-Device
(	O
TEAC	O
FD-55E	O
)	O
for	O
mass	O
storage	O
with	O
an	O
optional	O
10Mb	O
external	O
Winchester	O
hard	O
disk	O
drive	O
.	O
</s>
<s>
In	O
addition	O
to	O
the	O
Zilog	B-General_Concept
Z80	I-General_Concept
processor	O
clocked	O
at	O
4MHz	O
,	O
the	O
Visual	B-Device
1050	I-Device
also	O
included	O
a	O
MOS	B-General_Concept
Technology	I-General_Concept
6502	I-General_Concept
used	O
as	O
a	O
graphics	O
coprocessor	O
.	O
</s>
<s>
The	O
Visual	B-Device
1050	I-Device
featured	O
a	O
dual-processor	O
architecture	O
;	O
Z80A	B-General_Concept
processor	O
as	O
the	O
main	O
CPU	O
and	O
a	O
6502	B-General_Concept
to	O
drive	O
the	O
display	O
.	O
</s>
<s>
Memory	O
:	O
160K	O
of	O
RAM	B-Architecture
was	O
included	O
with	O
the	O
system	O
.	O
</s>
<s>
Screen	O
:	O
The	O
display	O
unit	O
was	O
640×300	O
pixel	O
,	O
80×25	O
character	O
(	O
8×12	O
dot	O
matrix	O
)	O
green	O
monochrome	O
CRT	B-Device
bit-mapped	O
display	O
.	O
</s>
<s>
The	O
display	O
offered	O
programmable	O
features	O
which	O
could	O
be	O
invoked	O
from	O
the	O
main	O
processing	O
unit	O
via	O
a	O
character-stream	O
interface	O
built	O
in	O
between	O
the	O
Z80	B-General_Concept
CPU	O
and	O
6502	B-General_Concept
co-processor	O
.	O
</s>
<s>
Keyboard	B-Device
:	O
Keytronic	O
full	O
stroke	O
93-key	O
with	O
numeric	O
key	O
pad	O
&	O
17	O
function	O
keys	O
.	O
</s>
<s>
Software	O
:	O
The	O
standard	O
Visual	B-Device
1050	I-Device
shipped	O
with	O
CP/M	B-Application
Plus	O
operating	B-General_Concept
system	I-General_Concept
,	O
a	O
CP/M	B-Application
source	O
disk	O
,	O
a	O
copy	O
of	O
WordStar	B-Application
word	B-General_Concept
processor	I-General_Concept
with	O
MailMerge	O
software	O
,	O
Microsoft	B-Device
Multiplan	I-Device
spreadsheet	B-Application
,	O
Digital	O
Research	O
DR	O
Graph	O
charting	O
software	O
,	O
Digital	O
Research	O
CBASIC	B-Language
computer	B-Language
language	I-Language
,	O
and	O
an	O
RS-232C	O
communications	O
program	O
.	O
</s>
<s>
Chipset	O
:	O
In	O
addition	O
to	O
the	O
Z80	B-General_Concept
and	O
6502	B-General_Concept
,	O
the	O
system	O
also	O
included	O
Intel	B-Device
8255A	I-Device
PIO	O
,	O
Intel	B-Device
8251A	I-Device
USART	O
,	O
Intel	O
8214	O
Programmable	B-Architecture
Interrupt	I-Architecture
Controller	I-Architecture
,	O
Motorola	B-General_Concept
6845	I-General_Concept
CRT	B-Device
controller	O
,	O
Western	O
Digital	O
1793	B-Device
floppy	B-Device
disk	I-Device
controller	O
,	O
and	O
OKI	O
MSM5832	O
real	O
time	O
clock	O
.	O
</s>
<s>
The	O
Visual	B-Device
1050	I-Device
optionally	O
supported	O
a	O
10MB	O
Winchester	O
hard-drive	O
via	O
a	O
Xebec	O
S1410	O
Disk	O
Controller	O
.	O
</s>
