Code 135 - Coded Data Field: Computer Files (Provisional) (R)
Indicators: blank
Subfield codes
$a Coded Data for Computer Files (Not repeatable)
$a/0 Type of computer file
a = numeric
b = computer program(s)
c = representational
d = text
u = unknown
v = combination
z = other
$a/1 Special Material Designation
a = cartridge magnetic tape
b = computer chip in cartridge
c = computer optical disc cartridge
f = computer magnetic cassette tape
h = magnetic tape for main-frame computers
j = computer floppy disk
m = computer magneto-optical disk
o = computer optical disk
r = online systems
u = unknown
z = other
$a/2 Colour
a = One colour
b = Black-and-white
c = Multicoloured
g = Grey scale
m = Mixed
n = Not applicable
u = Unknown
z = Other
$a/3 Dimensions
a = 31/2 in
e = 12 in
g = 43/4 in or 12 cm
i = 1 1/8 x 2 3/8 in
j = 3 7/8 x 21/2 in
n = Not applicable
o = 51/4 in
u = Unknown
v = 8 in.
z = Other
$a/4 Sound
# = No sound (silent)
a = Sound on medium
u = Unknown
$a/5-7 Image Bit Depth
001-999 = Exact bit depth
mmm = Multiple (more than one image type)
nnn = Not applicable
--- = Unknown
$a/8 Number of File Formats
a = One file format
m = Multiple file formats
u = Unknown
$a/9 Quality Assurance Target(s)
a = Absent
n = Not applicable
p = Present
u = Unknown
$a/10 Antecedent/Source
a = File reproduced from original
b = File reproduced from microform
c = File reproduced from electronic resource
d = File reproduced from an intermediate source other than
microform
m = Mixed
n = Not applicable
u = Unknown
$a/11 Level of Compression
a = Uncompressed
b = Lossless
d = Lossy
m = Mixed
u = Unknown
$a/12 Reformatting Quality
a = Access
n = Not applicable
p = Preservation
r = Replacement
u = Unknown